Light coupling assembly, adapter, connector body and fiber optic connector

Abstract

The application provides a light condensing coupling assembly, an adapter, a connector body, a fiber connector and a communication device. The fiber connector comprises two connector bodies and a light condensing coupling assembly. The light condensing coupling assembly is arranged between the two connector bodies and has at least two light channels. The two side surfaces of the light condensing coupling assembly are arranged opposite to the end surfaces of the optical fibers connected with the two connector bodies, so that the end surfaces of the optical fibers connected with the two connector bodies are connected through the light channel light path. The light condensing coupling assembly comprises a first light-transmitting refractive element and a second light-transmitting refractive element arranged in layers. The refractive index of the first light-transmitting refractive element is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element and the second light-transmitting refractive element. The light condensing coupling assembly is arranged to condense the light beams transmitted between the end surfaces of the two optical fibers through the light channel, so as to reduce the connection accuracy requirement of the two connector bodies.

Description

Technical Field

[0001] This application belongs to the field of laser technology, and more specifically, relates to a focusing coupling component, an adapter, a connector body, an optical fiber connector, and a communication device. Background Technology

[0002] Fiber optic connectors are core passive devices that enable accurate optical path connection between optical fibers in communication equipment. A fiber optic connector typically consists of two connector bodies that connect to the ends of the optical fibers. By mating the two connector bodies together, the end faces of the optical fibers connected to the two connector bodies come into contact with each other, thus establishing optical path connection.

[0003] However, in related technologies, to ensure accurate optical path connection between the end faces of the optical fibers connected to the two connector bodies, high connection precision is required. Furthermore, after the end faces of the optical fibers connected to the two connector bodies abut against each other, end face and mechanical damage are likely to occur. Summary of the Invention

[0004] The purpose of this application is to provide a focusing coupling component, an adapter, a connector body, an optical fiber connector, and a communication device to solve the technical problems in the background art, such as contamination and damage caused by direct contact between optical fiber end faces, and thermal expansion deformation of the optical fiber connector and optical fiber, leading to thermal deformation and misalignment of the end faces of the two opposing optical fibers, resulting in increased insertion loss. Specifically, the focusing coupling component concentrates the light beam transmitted between the end faces of the two optical fibers through its optical channel. This enables spatial optical coupling between the two optical fiber end faces through the focusing coupling component, rather than direct physical contact coupling, which helps reduce the alignment accuracy requirements of the end faces of the optical fibers on both sides of the focusing coupling component, thereby reducing the connection accuracy requirements of the two connector bodies. By including a light-transmitting refractive element made of an elastic material (such as liquid silicone) in the focusing coupling assembly, dustproof and air-gap-free contact is achieved, and damage caused by direct contact between the two fiber end faces is prevented. At the same time, the light spot is reduced by stacking high-refractive-index light-transmitting refractive elements and low-refractive-index light-transmitting refractive elements (in conjunction with an aspherical array), thereby increasing the misalignment tolerance, compensating for thermal deformation and misalignment caused by the difference in thermal expansion coefficients between the connector body and the optical fiber, avoiding increased insertion loss in high and low temperature application environments, and ensuring stable optical path connectivity.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide an optical fiber connector, comprising: Two connector bodies, each of which is configured to be directly or indirectly connected to an optical fiber; A focusing coupling assembly is disposed between the two connector bodies and has at least two optical channels. The two side surfaces of the focusing coupling assembly are configured to face the end faces of the optical fibers connected to the two connector bodies, so that the end faces of the optical fibers connected to the two connector bodies are optically connected through the optical channels of the focusing coupling assembly. The focusing coupling assembly includes a first and a second light-transmitting refractive element stacked together. The refractive index of the first light-transmitting refractive element is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element is greater than or equal to 1.51. There is no air gap between the first and second light-transmitting refractive elements. Spatial optical coupling is achieved between the end faces of the two optical fibers through the focusing coupling assembly, rather than direct physical contact coupling. The focusing coupling assembly is configured to focus the light beam transmitted between the end faces of the two optical fibers through the optical channels.

[0006] In some embodiments, the fiber optic connector further includes an adapter, the adapter including a mounting cavity, and the focusing coupling assembly located within the mounting cavity; the two connector bodies are configured to be inserted into the mounting cavity from opposite sides of the adapter, such that the side surfaces of the focusing coupling assembly are opposite to the end faces of the optical fibers directly or indirectly connected to the two connector bodies; the focusing coupling assembly is detachably mounted in the mounting cavity; and / or, The focusing coupling component is configured to focus the incident beam to reduce the beam size, thereby increasing the misalignment tolerance to compensate for thermal deformation misalignment caused by the difference in thermal expansion coefficients between the connector body and the focusing coupling component, so that the insertion loss between the two fiber end faces remains stable in high and low temperature environments.

[0007] In some embodiments, the refractive index of the first light-transmitting refractive element is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting and refractive element is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element is located between two first light-transmitting refractive elements, and the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, at least one first light-transmitting refractive element is located between two second light-transmitting refractive elements, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, the focusing coupling assembly includes one first light-transmitting refractive element and one second light-transmitting refractive element, the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; and / or, The number of the first light-transmitting refractive elements is multiple, and at least two of the first light-transmitting refractive elements have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements is multiple, and at least two of the second light-transmitting refractive elements have different or the same refractive index; and / or, The first light-transmitting and refractive element and the second light-transmitting and refractive element are integrally disposed; and / or, The first light-transmitting and refractive element is made of an elastic material; and / or, At least one of the second light-transmitting refractive elements has a refractive index greater than that of the first light-transmitting refractive element; or, at least one of the second light-transmitting refractive elements has a refractive index equal to that of the first light-transmitting refractive element; or, at least one of the second light-transmitting refractive elements has a refractive index less than that of the first light-transmitting refractive element; and / or, The focusing coupling assembly includes a refractive index gradient material, the refractive index of which continuously and gradually changes along the stacking direction of the first and second light-transmitting refractive elements; and / or, The first light-transmitting refractive element and the second light-transmitting refractive element are integrally formed by a refractive index gradient material. The refractive index of the refractive index gradient material continuously increases or decreases from one side surface to the other side surface of the light-concentrating coupling assembly along the stacking direction of the first light-transmitting refractive element and the second light-transmitting refractive element.

[0008] In some embodiments, the second light-transmitting refractive element includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element and the refractive index of the second light-transmitting refractive element is greater than or equal to 0.05; and / or, At least one of the first and second light-transmitting refractive elements is configured to focus the incident light beam; and / or, The focusing coupling assembly does not include a refractive index matching fluid; and / or, At least one of the first light-transmitting and refractive elements includes a concave lens on the side opposite to the second light-transmitting and refractive element, the concave lens corresponding to the position of the light channel; and / or, Two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with an air gap between them; or, two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two second light-transmitting refractive elements corresponding to the position of the light channel; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with an air gap between them; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two first light-transmitting refractive elements corresponding to the position of the light channel; and / or, When there is an air gap between the side of the first light-transmitting refractive element away from the second light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the first light-transmitting refractive element away from the second light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; or, when there is an air gap between the side of the second light-transmitting refractive element away from the first light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the second light-transmitting refractive element away from the first light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; and / or, The refractive index of the first light-transmitting refractive element is less than that of the second light-transmitting refractive element, and a convex lens is provided on the side of the second light-transmitting refractive element facing the first light-transmitting refractive element at the position corresponding to the light channel; or, the refractive index of the first light-transmitting refractive element is greater than that of the second light-transmitting refractive element, and a convex lens is provided on the side of the first light-transmitting refractive element facing the second light-transmitting refractive element at the position corresponding to the light channel.

[0009] In some embodiments, the microlens array includes biconvex microlenses or monoconvex microlenses; and / or, The air gap between the surface of the first light-transmitting and refractive element facing the second light-transmitting and refractive element and the side surface of the second light-transmitting and refractive element is less than or equal to 0.3 mm; and / or, The microlens array has convex lenses protruding on both sides corresponding to the position of the optical channel; the curvature of the surfaces of the convex lenses distributed on both sides of the microlens array may be the same or different; or, one side of the microlens array has a convex lens protruding corresponding to the optical channel, and the other side has a concave lens formed on the surface of the optical channel that is either flat or recessed.

[0010] In some embodiments, auxiliary mounting structures are provided on both sides of the second light-transmitting refractive element, the auxiliary mounting structures being configured to mount the first light-transmitting refractive element; the auxiliary mounting structure includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element; or, the auxiliary mounting structure includes at least one mounting groove, at least a portion of the first light-transmitting refractive element being mounted in the at least one mounting groove; and / or, The light-concentrating coupling component further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element and the first light-transmitting refractive element; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymers, cyclic olefin polymers, polymethyl methacrylate and polycarbonate.

[0011] In some embodiments, the material of the second light-transmitting refractive element includes at least one selected from polyetherimide, cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyethersulfone, and polysulfone; and / or, The material of the first light-transmitting and refractive element includes at least one of silicone, polyurethane, transparent resin and fluorosilicone.

[0012] In some embodiments, the connector body is provided with a ferrule configured to be directly or indirectly connected to the optical fiber; the ferrule includes an abutment surface, the abutment surface being flush with the end face of the optical fiber directly or indirectly connected to the ferrule, and the abutment surface abutting against one side surface of the focusing coupling assembly.

[0013] In some embodiments, the fiber optic connector includes a positioning rod, the ferrule has a through positioning hole, the positioning rod is inserted into the positioning holes of two ferrules to position the two ferrules; the focusing coupling assembly has a through hole through which the positioning rod passes.

[0014] In some embodiments, the through hole is provided in the second light-transmitting and refractive element.

[0015] In some embodiments, the fiber optic connector further includes a ferrule configured to be directly or indirectly connected to the fiber optic cable. The connector body includes a main housing with a mounting hole, and the ferrule is mounted in the mounting hole. The outer periphery of the ferrule is provided with at least one anti-mistake step, and the inner periphery of the mounting hole is provided with an anti-mistake groove adapted to the at least one anti-mistake step. The anti-mistake step is at least partially accommodated in the anti-mistake groove.

[0016] In some embodiments, the inner side of the anti-fooling groove is configured to abut against the anti-fooling step to limit the sliding distance of the ferrule relative to the main housing; the ferrule includes an abutment surface that is flush with the end face of the optical fiber directly or indirectly connected to the ferrule, and the anti-fooling step is located at the end of the ferrule away from the abutment surface.

[0017] In some embodiments, the outer periphery of the ferrule is further provided with a plurality of anti-foolproof steps, which are arranged along the circumference of the ferrule.

[0018] In some embodiments, at least two of the foolproof steps have different heights; and / or, at least two of the foolproof steps have different lengths extending circumferentially in the insert.

[0019] In some embodiments, at least one of the anti-foolproof steps extends in the circumferential direction of the insert for a length greater than or equal to 2.8 mm and less than or equal to 3.8 mm; and / or, At least one of the anti-foolproof steps extends in the circumferential direction of the insert for a length greater than or equal to 1 mm and less than or equal to 6 mm; and / or, The difference in length between at least two of the aforementioned anti-foolproof steps extending circumferentially in the ferrule is greater than or equal to 0.2 mm; and / or, At least one of the anti-foolproof steps has a width along the axial direction of the insert that is greater than or equal to 0.1 mm and less than or equal to 5 mm; and / or, At least one of the aforementioned anti-fouling steps has a height greater than or equal to 0.2 mm; and / or, The maximum thickness of the ferrule is greater than or equal to 2.2 mm; and / or, One end of the insert is provided with the anti-foolproof step, the dimension of the end of the insert away from the anti-foolproof step along the thickness direction is less than 2.0 mm, the width dimension of the insert is less than 7.0 mm, and the length of the insert along its axial direction is less than 15.06 mm.

[0020] In some embodiments, at least two of the foolproof steps distributed on opposite sides of the ferrule have different lengths and / or heights.

[0021] In some embodiments, the connector body is provided with a plurality of ferrules, each ferrule being configured to be directly or indirectly connected to the end of at least one of the optical fibers.

[0022] In some embodiments, the connector body is provided with a ferrule configured to be directly or indirectly connected to the optical fiber; the ferrule includes an abutment surface that is flush with the end face of the optical fiber, and the abutment surface is at least one of an angular physical contact bevel, a spherical surface, a physical contact plane perpendicular to the axial direction of the ferrule, and a superphysical contact plane perpendicular to the axial direction of the ferrule.

[0023] In some embodiments, the angle formed between the surface perpendicular to the axial direction of the insert and the abutting surface is greater than or equal to 6° and less than or equal to 12°.

[0024] The connector body is a multi-core push-pull fiber optic connector body. The multi-core push-pull fiber optic connector body is provided with a mechanically movable ferrule. The mechanically movable ferrule is provided with multiple fiber holes and at least two positioning holes. The multiple fiber holes are located between the at least two positioning holes. The center-to-center distance between the at least two positioning holes is 4.60 mm or 5.30 mm. The multiple optical channels of the focusing coupling assembly correspond one-to-one with the multiple fiber optic holes of the mechanically transferable ferrule. The focusing coupling assembly is configured to focus the incident light beam through the optical channel to reduce the light spot, thereby increasing the misalignment tolerance and compensating for thermal deformation misalignment caused by the difference in thermal expansion coefficients between the mechanically transferable ferrule and the focusing coupling assembly, so that the insertion loss remains stable in high and low temperature environments.

[0025] In some embodiments, the fiber optic connector further includes an adapter, a locking assembly, and a push-back structure. The adapter includes a mounting cavity, and the two connector bodies are configured to be inserted into the mounting cavity from opposite sides of the adapter, such that the end faces of the optical fibers connected to the two connector bodies are optically connected through the optical path of the focusing coupling assembly; at least one of the connector bodies is connected to the adapter via the locking assembly. The locking assembly is configured to provide locking force to the connector body. The locking assembly includes a first locking structure and a second locking structure. The adapter is provided with at least one of the first locking structure and the second locking structure. The connector body is provided with at least one of the first locking structure and the second locking structure. The first locking structure and the second locking structure are configured to engage and disengage with each other. The reverse push structure is configured to apply a reset force opposite to the insertion direction to the connector body to drive the connector body out. When at least one of the connector bodies is inserted into the mounting cavity to a first position, the first locking structure and the second locking structure engage with each other to lock the connector body and the adapter; when the connector body continues to move from the first position to the second position along the insertion direction, the first locking structure and the second locking structure disengage from each other, and the reverse push structure drives the connector body to exit in the opposite direction along the insertion direction.

[0026] In some embodiments, one of the connector bodies is inserted into the mounting cavity from one side of the adapter and connected to the adapter via the locking assembly, while the other connector body is inserted into the mounting cavity from the other side of the adapter and fixedly mounted to the adapter, such that one of the connector bodies can be plugged into and unplugged from one side of the adapter, and the other connector body is fixedly mounted on the other side of the adapter. One of the connector bodies includes a main housing with a mounting hole extending through the insertion direction. A ferrule is fixedly installed in the mounting hole. The ferrule is configured to be directly or indirectly connected to the end of the optical fiber. The ferrule has multiple fiber holes and at least two positioning holes. The multiple fiber holes are located between the at least two positioning holes, and the center-to-center distance between the at least two positioning holes is 4.60 mm or 5.30 mm. The ferrule is a mechanically movable ferrule. The main housing is positioned by cooperating with the adapter through a positioning component to position the ferrule on one side of the adapter's mounting cavity. The focusing coupling assembly is located inside the mounting cavity, and the multiple optical channels of the focusing coupling assembly correspond one-to-one with the multiple optical fiber holes of the ferrule.

[0027] This application embodiment also provides a connector body, which is configured to be directly or indirectly connected to at least one optical fiber; wherein, the connector body is provided with a focusing coupling component, the focusing coupling component has at least two optical channels, one side surface of the focusing coupling component is configured to be opposite to the end face of at least one optical fiber directly or indirectly connected to the connector body, and the other side surface of the focusing coupling component is configured to be opposite to the end face of at least another optical fiber, so that the end faces of the optical fibers on both sides of the focusing coupling component are connected through the optical channels of the focusing coupling component; The focusing coupling assembly includes a first light-transmitting refractive element and a second light-transmitting refractive element stacked together. The refractive index of the first light-transmitting refractive element is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element and the second light-transmitting refractive element. The two optical fiber end faces are spatially optically coupled through the focusing coupling assembly, rather than being directly physically contacted. The focusing coupling assembly is configured to focus the light beam transmitted between the end faces of the two optical fibers through an optical channel.

[0028] In some embodiments, the refractive index of the first light-transmitting refractive element is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting and refractive element is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element is located between two first light-transmitting refractive elements, and the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, at least one first light-transmitting refractive element is located between two second light-transmitting refractive elements, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, the focusing coupling assembly includes one first light-transmitting refractive element and one second light-transmitting refractive element, the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; and / or, The number of the first light-transmitting refractive elements is multiple, and at least two of the first light-transmitting refractive elements have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements is multiple, and at least two of the second light-transmitting refractive elements have different or the same refractive index; and / or, The first light-transmitting and refractive element and the second light-transmitting and refractive element are integrally disposed; and / or, The first light-transmitting and refractive element is made of an elastic material; and / or, The refractive index of at least one of the second light-transmitting refractive elements is greater than that of the first light-transmitting refractive element, or the refractive index of at least one of the second light-transmitting refractive elements is equal to that of the first light-transmitting refractive element, or the refractive index of at least one of the second light-transmitting refractive elements is less than that of the first light-transmitting refractive element.

[0029] In some embodiments, the second light-transmitting refractive element includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element and the refractive index of the second light-transmitting refractive element is greater than or equal to 0.05; and / or, At least one of the first and second light-transmitting refractive elements is configured to focus the incident light beam; and / or, The focusing coupling assembly does not include a refractive index matching fluid; and / or, At least one of the first light-transmitting and refractive elements includes a concave lens on the side opposite to the second light-transmitting and refractive element, the concave lens corresponding to the position of the light channel; and / or, Two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with an air gap between them; or, two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two second light-transmitting refractive elements corresponding to the position of the light channel; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with an air gap between them; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two first light-transmitting refractive elements corresponding to the position of the light channel; and / or, When there is an air gap between the side of the first light-transmitting refractive element away from the second light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the first light-transmitting refractive element away from the second light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; or, when there is an air gap between the side of the second light-transmitting refractive element away from the first light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the second light-transmitting refractive element away from the first light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; and / or, The refractive index of the first light-transmitting refractive element is less than that of the second light-transmitting refractive element, and a convex lens protrudes from the second light-transmitting refractive element on the side facing the first light-transmitting refractive element corresponding to the position of the light channel; or, the refractive index of the first light-transmitting refractive element is greater than that of the second light-transmitting refractive element, and a convex lens protrudes from the first light-transmitting refractive element on the side facing the second light-transmitting refractive element corresponding to the position of the light channel; and / or, The second light-transmitting refractive element has auxiliary mounting structures on both sides, the auxiliary mounting structures being configured to mount the first light-transmitting refractive element; the auxiliary mounting structure includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element; or, the auxiliary mounting structure includes at least one mounting groove, at least a portion of the first light-transmitting refractive element being mounted in the at least one mounting groove; and / or, The light-concentrating coupling component further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element and the first light-transmitting refractive element; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymers, cyclic olefin polymers, polymethyl methacrylate and polycarbonate.

[0030] In some embodiments, the connector body is provided with a ferrule configured to be directly or indirectly connected to the optical fiber; the ferrule includes an abutment surface, the abutment surface being flush with the end face of the optical fiber directly or indirectly connected to the ferrule, and the abutment surface abutting against one side surface of the focusing coupling assembly.

[0031] In some embodiments, the connector body includes a positioning rod, the ferrule has a through positioning hole, and the positioning rod is configured to be inserted into the positioning hole of two ferrules to position the two ferrules; the focusing coupling assembly has a through hole through which the positioning rod passes.

[0032] This application embodiment also provides an adapter, the adapter including a mounting cavity, the adapter being configured to allow two connector bodies to be inserted into the mounting cavity from opposite sides of the adapter; wherein, the adapter is provided with a focusing coupling assembly, the focusing coupling assembly having at least two optical channels, and the two side surfaces of the focusing coupling assembly being configured to be opposite to the end faces of the optical fibers directly or indirectly connected to the two connector bodies, so that the end faces of the optical fibers on both sides of the focusing coupling assembly are optically connected through the optical channels of the focusing coupling assembly; The focusing coupling assembly includes a first light-transmitting refractive element and a second light-transmitting refractive element stacked together. The refractive index of the first light-transmitting refractive element is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element and the second light-transmitting refractive element. The two optical fiber end faces are spatially optically coupled through the focusing coupling assembly, rather than being directly physically contacted. The focusing coupling assembly is configured to focus the light beam transmitted between the end faces of the two optical fibers through an optical channel.

[0033] In some embodiments, the refractive index of the first light-transmitting refractive element is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting and refractive element is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element is located between two first light-transmitting refractive elements, and the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, at least one first light-transmitting refractive element is located between two second light-transmitting refractive elements, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, the focusing coupling assembly includes one first light-transmitting refractive element and one second light-transmitting refractive element, the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; and / or, The number of the first light-transmitting refractive elements is multiple, and at least two of the first light-transmitting refractive elements have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements is multiple, and at least two of the second light-transmitting refractive elements have different or the same refractive index; and / or, The first light-transmitting and refractive element and the second light-transmitting and refractive element are integrally disposed; and / or, The first light-transmitting and refractive element is made of an elastic material; and / or, The refractive index of at least one of the second light-transmitting refractive elements is greater than that of the first light-transmitting refractive element, or the refractive index of at least one of the second light-transmitting refractive elements is equal to that of the first light-transmitting refractive element, or the refractive index of at least one of the second light-transmitting refractive elements is less than that of the first light-transmitting refractive element.

[0034] In some embodiments, the second light-transmitting refractive element includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element and the refractive index of the second light-transmitting refractive element is greater than or equal to 0.05; and / or, At least one of the first and second light-transmitting refractive elements is configured to focus the incident light beam; and / or, The focusing coupling assembly does not include a refractive index matching fluid; and / or, At least one of the first light-transmitting and refractive elements includes a concave lens on the side opposite to the second light-transmitting and refractive element, the concave lens corresponding to the position of the light channel; and / or, Two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with an air gap between them; or, two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two second light-transmitting refractive elements corresponding to the position of the light channel; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with an air gap between them; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two first light-transmitting refractive elements corresponding to the position of the light channel; and / or, When there is an air gap between the side of the first light-transmitting refractive element away from the second light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the first light-transmitting refractive element away from the second light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; or, when there is an air gap between the side of the second light-transmitting refractive element away from the first light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the second light-transmitting refractive element away from the first light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; and / or, The refractive index of the first light-transmitting refractive element is less than that of the second light-transmitting refractive element, and a convex lens protrudes from the second light-transmitting refractive element on the side facing the first light-transmitting refractive element corresponding to the position of the light channel; or, the refractive index of the first light-transmitting refractive element is greater than that of the second light-transmitting refractive element, and a convex lens protrudes from the first light-transmitting refractive element on the side facing the second light-transmitting refractive element corresponding to the position of the light channel; and / or, The second light-transmitting refractive element has auxiliary mounting structures on both sides, the auxiliary mounting structures being configured to mount the first light-transmitting refractive element; the auxiliary mounting structure includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element; or, the auxiliary mounting structure includes at least one mounting groove, at least a portion of the first light-transmitting refractive element being mounted in the at least one mounting groove; and / or, The light-concentrating coupling component further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element and the first light-transmitting refractive element; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymers, cyclic olefin polymers, polymethyl methacrylate and polycarbonate.

[0035] This application embodiment also provides a focusing coupling component, which uses the optical fiber connector as described above; or, uses the connector body as described above; or, uses the adapter as described above; The optical focusing coupling component has at least two optical channels, and the two side surfaces of the optical focusing coupling component are configured to face the end faces of the optical fibers on both sides of the optical focusing coupling component, so that the end faces of the optical fibers on both sides of the optical focusing coupling component are connected through the optical channels of the optical focusing coupling component. The focusing coupling assembly includes a first light-transmitting refractive element and a second light-transmitting refractive element stacked together. The refractive index of the first light-transmitting refractive element is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element and the second light-transmitting refractive element. The two optical fiber end faces are spatially optically coupled through the focusing coupling assembly, rather than being directly physically contacted. The focusing coupling assembly is configured to focus the light beam transmitted between the end faces of the two optical fibers through an optical channel.

[0036] In some embodiments, the refractive index of the first light-transmitting refractive element is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting and refractive element is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element is located between two first light-transmitting refractive elements, and the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, at least one first light-transmitting refractive element is located between two second light-transmitting refractive elements, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; or, the focusing coupling assembly includes one first light-transmitting refractive element and one second light-transmitting refractive element, the side of the first light-transmitting refractive element facing away from the second light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber, and the side of the second light-transmitting refractive element facing away from the first light-transmitting refractive element abuts against or has an air gap with the end face of the corresponding optical fiber; and / or, The number of the first light-transmitting refractive elements is multiple, and at least two of the first light-transmitting refractive elements have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements is multiple, and at least two of the second light-transmitting refractive elements have different or the same refractive index; and / or, The first light-transmitting and refractive element and the second light-transmitting and refractive element are integrally disposed; and / or, The first light-transmitting and refractive element is made of an elastic material; and / or, The refractive index of at least one of the second light-transmitting refractive elements is greater than that of the first light-transmitting refractive element, or the refractive index of at least one of the second light-transmitting refractive elements is equal to that of the first light-transmitting refractive element, or the refractive index of at least one of the second light-transmitting refractive elements is less than that of the first light-transmitting refractive element.

[0037] In some embodiments, the second light-transmitting refractive element includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element and the refractive index of the second light-transmitting refractive element is greater than or equal to 0.05; and / or, At least one of the first and second light-transmitting refractive elements is configured to focus the incident light beam; and / or, The focusing coupling assembly does not include a refractive index matching fluid; and / or, At least one of the first light-transmitting and refractive elements includes a concave lens on the side opposite to the second light-transmitting and refractive element, the concave lens corresponding to the position of the light channel; and / or, Two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with an air gap between them; or, two second light-transmitting refractive elements are located between two first light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two second light-transmitting refractive elements corresponding to the position of the light channel; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with an air gap between them; or, two first light-transmitting refractive elements are located between two second light-transmitting refractive elements, with concave lenses formed by recesses on the opposing sides of the two first light-transmitting refractive elements corresponding to the position of the light channel; and / or, When there is an air gap between the side of the first light-transmitting refractive element away from the second light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the first light-transmitting refractive element away from the second light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; or, when there is an air gap between the side of the second light-transmitting refractive element away from the first light-transmitting refractive element and the corresponding end face of the optical fiber, the side of the second light-transmitting refractive element away from the first light-transmitting refractive element corresponding to the position of the optical fiber is a plane or is provided with a convex lens; and / or, The refractive index of the first light-transmitting refractive element is less than that of the second light-transmitting refractive element, and a convex lens protrudes from the second light-transmitting refractive element on the side facing the first light-transmitting refractive element corresponding to the position of the light channel; or, the refractive index of the first light-transmitting refractive element is greater than that of the second light-transmitting refractive element, and a convex lens protrudes from the first light-transmitting refractive element on the side facing the second light-transmitting refractive element corresponding to the position of the light channel; and / or, The second light-transmitting refractive element has auxiliary mounting structures on both sides, the auxiliary mounting structures being configured to mount the first light-transmitting refractive element; the auxiliary mounting structure includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element; or, the auxiliary mounting structure includes at least one mounting groove, at least a portion of the first light-transmitting refractive element being mounted in the at least one mounting groove; and / or, The light-concentrating coupling component further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element and the first light-transmitting refractive element; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymers, cyclic olefin polymers, polymethyl methacrylate and polycarbonate.

[0038] This application embodiment also provides an optical fiber communication device, including the optical fiber connector as described above; or, including the connector body as described above; or, including the adapter as described above; or, including the focusing coupling component as described above; The fiber optic communication equipment includes at least one of the following: data center switches, fiber optic distribution frames, optical transmission equipment, optical module testing equipment, fiber lasers, 5G base station optical interface equipment, 5G base station backhaul optical interface equipment, 6G base station fronthaul optical interface equipment, 6G base station backhaul optical interface equipment, quantum communication equipment, co-packaged optical onboard optical module interface equipment, optical circuit switching equipment, optical cross-connect equipment, near-packaged optical equipment, AI computing power cluster optical interconnect equipment, supercomputing center optical interconnect equipment, autonomous driving LiDAR, vehicle-mounted optical communication equipment, silicon photonics engine, fiber-to-the-home optical access equipment, satellite laser communication equipment, and distributed fiber optic sensing equipment.

[0039] The fiber optic connector provided in this application embodiment provides a focusing coupling component between two connector bodies, with the two side surfaces of the focusing coupling component facing the end faces of the two optical fibers. This allows the end faces of the optical fibers on both sides of the focusing coupling component to be connected through an optical channel. Furthermore, the optical coupling component includes a first and a second light-transmitting refractive element stacked together, with the refractive index of the first light-transmitting refractive element being less than or equal to 1.67 and the refractive index of the second light-transmitting refractive element being greater than or equal to 1.51. There is no air gap between the first and second light-transmitting refractive elements, enabling spatial optical coupling between the end faces of the two optical fibers through the focusing coupling component, rather than direct physical contact coupling. The optical channel of the focusing coupling component focuses the light beam transmitted between the end faces of the two optical fibers. This allows for spatial optical coupling between the two fiber end faces via a focusing coupling assembly, rather than direct physical contact coupling. This reduces the alignment accuracy requirements of the fiber end faces on both sides of the focusing coupling assembly, thereby lowering the connection accuracy requirements of the two connector bodies. It also prevents thermal expansion deformation of the fiber connector and fiber, which could cause thermal deformation and misalignment of the two fiber end faces, leading to increased insertion loss and affecting the stability of the optical path. Furthermore, the fact that the two fiber end faces do not directly contact each other reduces the risk of contamination and mechanical damage to the fiber end faces. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of the first embodiment of the fiber optic connector provided in this application. Figure 2 for Figure 1 A schematic diagram of the structure when the connector body is separated from the adapter; Figure 3 for Figure 1 A cross-sectional view of the adapter, wherein the cutting plane is perpendicular to the thickness direction of the ferrule; Figure 4 A schematic diagram of the structure of a second embodiment of the fiber optic connector provided in this application, wherein the connector body and the adapter are in a separate state; Figure 5 A schematic diagram of the structure of the first embodiment of the adapter provided in this application; Figure 6A cross-sectional view of a third embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the ferrule; Figure 7 A cross-sectional view of a fourth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the ferrule; Figure 8 A schematic diagram illustrating the process of inserting the connector body of the optical fiber connector provided in this embodiment of the application into the mounting cavity of the adapter to a first position; Figure 9 A schematic diagram illustrating the process of the connector body of the optical fiber connector provided in this application moving from a first position to a second position along the insertion direction, and the process of the connector body separating from the adapter; Figure 10 A schematic diagram illustrating another embodiment of the process of connecting and separating the connector body and adapter of the optical fiber connector provided in this application; Figure 11 This is a schematic diagram of the structure of the first embodiment of the chute provided in this application; Figure 12 A schematic diagram of the structure of a second embodiment of the chute provided in this application; Figure 13 This is a schematic diagram of the fifth embodiment of the fiber optic connector provided in this application, wherein the connector body and the adapter are in a separate state; Figure 14 for Figure 13 Enlarged view of point A in the middle; Figure 15 for Figure 13 Enlarged view of point B in the middle; Figure 16 This is a schematic diagram of the structure of a second embodiment of the adapter provided in this application, wherein the second locking structure is in a separated state from the adapter; Figure 17 A schematic diagram of the structure of one embodiment of the connector body provided in this application; Figure 18 This is a schematic diagram of the sixth embodiment of the fiber optic connector provided in this application, wherein the connector body and the adapter are in a separate state; Figure 19 This is a schematic diagram of the seventh embodiment of the fiber optic connector provided in this application, wherein the connector body and the adapter are in a separate state; Figure 20 An exploded view of one embodiment of the fiber optic connector provided in this application. Figure 21A cross-sectional view of the eighth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the ferrule; Figure 22 A cross-sectional view of a ninth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the ferrule; Figure 23 A cross-sectional view of the tenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 24 Another angle view of the first embodiment of the fiber optic connector provided in this application; Figure 25 An exploded view of one embodiment of the adapter and card holder provided in this application; Figure 26 This is a schematic diagram of the assembled structure of the adapter and the card holder provided in the embodiments of this application; Figure 27 A schematic diagram of the structure of one embodiment of the adapter and connector body provided in this application; Figure 28 A partial cross-sectional view of one embodiment of the fiber optic connector provided in this application; Figure 29 This is an exploded structural diagram of the first embodiment of the focusing coupling component provided in this application. Figure 30 A cross-sectional view of a first embodiment of the focusing coupling assembly provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the insert; Figure 31 A cross-sectional view of a second embodiment of the focusing coupling assembly provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the insert; Figure 32 Cross-sectional views of the third and fourth embodiments of the focusing coupling assembly provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the insert; Figure 33 for Figure 32 Enlarged view of point C in the middle; Figure 34 for Figure 32 Enlarged view at point D; Figure 35 A cross-sectional view of a fifth embodiment of the focusing coupling assembly provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the insert; Figure 36 A cross-sectional view of the eleventh embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 37A cross-sectional view of the twelfth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 38 A cross-sectional view of the thirteenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 39 A cross-sectional view of the fourteenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 40 A cross-sectional view of the fifteenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 41 A cross-sectional view of the sixteenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 42 A cross-sectional view of the seventeenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 43 A cross-sectional view of the eighteenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 44 A cross-sectional view of the nineteenth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 45 A cross-sectional view of the twentieth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 46 A cross-sectional view of the twenty-first embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 47 A cross-sectional view of the twenty-second embodiment of the fiber optic connector provided in this application, wherein the cross-sectional plane is perpendicular to the width direction of the ferrule; Figure 48 A cross-sectional view of the twenty-third embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 49 A cross-sectional view of the twenty-fourth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 50 A cross-sectional view of the twenty-fifth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 51A partial cross-sectional view of another embodiment of the fiber optic connector provided in this application; Figure 52 A cross-sectional view of the twenty-sixth embodiment of the fiber optic connector provided in this application; Figure 53 for Figure 52 A cross-sectional view of a fiber optic connector, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 54 for Figure 52 Exploded view of the optical fiber connector; Figure 55 A schematic diagram of the structure of the first embodiment of the ferrule provided in this application; Figure 56 Another angle view of the first embodiment of the ferrule provided in this application; Figure 57 A schematic diagram of the structure of a second embodiment of the ferrule provided in this application; Figure 58 Another angle view of a second embodiment of the ferrule provided in this application; Figure 59 A cross-sectional view of a second embodiment of the insert provided in this application, wherein the cutting plane is perpendicular to the thickness direction of the insert; Figure 60 An exploded structural diagram of one embodiment of the ferrule, optical fiber, and connector body provided in this application; Figure 61 An exploded structural diagram of one embodiment of the ferrule, optical fiber, and main housing provided in this application; Figure 62 A schematic diagram of the structure of the first embodiment of the ferrule and optical fiber provided in this application; Figure 63 A schematic diagram of the structure of the ferrule and optical fiber provided in the embodiments of this application; Figure 64 A schematic diagram of the structure of the ferrule and optical fiber provided in the embodiments of this application; Figure 65 A schematic diagram of the fourth embodiment of the ferrule and optical fiber provided in this application; Figure 66 A schematic diagram of the fifth embodiment of the ferrule and optical fiber provided in this application; Figure 67 An exploded structural diagram of one embodiment of the ferrule, optical fiber, and main housing provided in this application; Figure 68A cross-sectional view of the twenty-seventh embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 69 A cross-sectional view of the twenty-eighth embodiment of the fiber optic connector provided in this application, wherein the cutting plane is perpendicular to the width direction of the ferrule; Figure 70 This is a schematic diagram of the structure of one embodiment of the communication device provided in this application.

[0042] The following are the labeling elements in the figure: 1. Communication equipment; 10. Fiber optic connectors; 11. Locking assembly; 111. First locking structure; 1111. Slide groove; 1112. Slide-in section; 1113. Inlet; 1114. Locking section; 1115. Locking groove; 1116. Slide-out section; 1117. Outlet; 1118. Inlet section; 1119. Groove section; 112. Second locking structure; 1121. Swing arm; 1122. First connecting hole; 1123. Second connecting structure; 1124. Locking part; 1125. Bending section; 1126. First connecting section; 1127. Second connecting section; 12. Adapter; 1201. Second connecting hole; 1202. Mounting cavity; 1203. Mounting port; 1204. First positioning groove; 1205. Second positioning groove; 1206. Channel; 1207. Mounting part; 1208. Limiting protrusion; 1209. Limiting step; 1210. Limiting buckle; 1211. Clearance groove; 1212. Foolproof notch; 1213. Snap-fit ​​groove; 1214. Limiting groove; 122. Guide rod; 123. Holding member; 1231. First holding section; 1232. Second holding section; 13. Connector body; 131. Main housing; 1311. Main body part; 1312. Limiting part; 1313. First connecting structure; 1314. Mounting hole; 1315. Second abutting part; 1316. Second abutting bevel; 1317. Anti-fooling groove; 1318. Abutting protrusion; 1319. Snap-fit ​​part; 1320. First bayonet; 1321. Anti-disengagement buckle; 1322. Stop protrusion; 33. Clamping structure; 1331. Clamping component; 1332. Cover; 1333. Anti-fooling protrusion; 1334. Clamping space; 1335. Clamping part; 1336. Clamping hole; 1337. First clamping part; 1338. Second clamping part; 135. Crimping ring; 136. Heat shrink tubing; 137. Rear end sleeve; 1371. Pressing surface; 1372. Second bayonet; 138. Dust cap; 14. Fuse; 141. Positioning hole; 142. Anti-foolproof step; 143. Fiber optic hole; 144. Countersunk hole; 145. Glue groove; 146. Mounting step; 15. Base; 151. Through hole; 16. Positioning rod; 161. Connecting piece; 17. Reverse thrust structure; 171. Elastic element; 172. First magnetic element; 173. Second magnetic element; 174. First abutting part; 1741. First abutting inclined surface; 175. Tension spring; 176. Limiting element; 18. Concentrating coupling assembly; 180. Optical channel; 181. First light-transmitting and refractive element; 183. Second light-transmitting and refractive element; 184. Auxiliary mounting structure; 185. Mounting groove; 186. Through hole; 187. Convex lens; 189. Cavity; 190. Concave lens; 2. Optical fiber. Detailed Implementation

[0043] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0045] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] This application provides a focusing coupling assembly, a locking assembly, an adapter, a connector body, a fiber laser, and a communication device. These are described in detail below.

[0048] Figure 1 This is a schematic diagram of one embodiment of the fiber optic connector provided in this application. Figure 1 As shown, the fiber optic connector 10 includes an adapter 12 and at least one connector body 13. The connector body 13 is configured to be directly or indirectly connected to the end of at least one optical fiber 2. The connector body 13 is configured to be connected to the adapter 12 so that the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 is optically connected to the end face of at least another optical fiber 2 directly or indirectly connected to the adapter 12.

[0049] It should be noted that the connector body 13 can be connected to the end of one optical fiber 2 or to the ends of multiple optical fibers 2. Furthermore, the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 can be positioned opposite to and aligned with the end face of at least another optical fiber 2 directly or indirectly connected to the adapter 12, allowing unidirectional or bidirectional optical signal transmission between the end face of the at least one optical fiber 2 directly or indirectly connected to the connector body 13 and the end face of at least another optical fiber 2 directly or indirectly connected to the adapter 12, thereby enabling optical path communication between the end face of the at least one optical fiber 2 directly or indirectly connected to the connector body 13 and the end face of at least another optical fiber 2 directly or indirectly connected to the adapter 12.

[0050] During the connection or disconnection of the connector body 13 and the adapter 12, the end faces of the optical fiber 2 directly or indirectly connected to the connector body 13 and the other optical fiber 2 directly or indirectly connected to the adapter 12 are positioned opposite each other, either close to or far from each other. When the adapter 12 is completely separated from the connector body 13, the optical fiber 2 directly or indirectly connected to the connector body 13 is also completely separated from the adapter 12, and the optical fiber 2 directly or indirectly connected to the adapter 12 is also separated from the connector body 13.

[0051] In some embodiments, such as Figure 3 and Figure 28 As shown, the fiber optic connector 10 may include a focusing coupling component 18 having an optical channel 180. The focusing coupling component 18 is located between two connector bodies 13. The two side surfaces of the focusing coupling component 18 are arranged opposite to the end faces of the two optical fibers 2, so that the end faces of the two optical fibers 2 on both sides of the focusing coupling component 18 are connected through the optical channel 180. The focusing coupling component 18 is configured to focus the light beam transmitted between the end faces of the two optical fibers 2 through the optical channel 180.

[0052] The fiber optic connector 10 provided in this embodiment of the application provides a focusing coupling component 18 between two connector bodies 13, such that the two side surfaces of the focusing coupling component 18 are positioned opposite to the end faces of the two optical fibers 2, so that the end faces of the optical fibers 2 on both sides of the focusing coupling component 18 are optically connected through the optical channel 180. Furthermore, the light beam transmitted between the end faces of the two optical fibers 2 through the optical channel 180 via the focusing coupling component 18 is... Figure 30 The dotted line indicates the focusing process. This allows for spatial optical coupling between the end faces of the two optical fibers 2 via the focusing coupling assembly 18, rather than direct physical contact coupling. This reduces the alignment accuracy requirements of the end faces of the optical fibers 2 on both sides of the focusing coupling assembly 18, preventing thermal expansion deformation of the fiber connector and the optical fiber, which could cause thermal deformation and misalignment of the two optical fiber end faces, leading to increased insertion loss and affecting the stability of the optical path. Simultaneously, the end faces of the two optical fibers do not directly contact each other, reducing the risk of contamination and mechanical damage to the fiber end faces. Furthermore, it also helps reduce coupling loss of the optical fibers 2 on both sides of the focusing coupling assembly 18 and improves return loss.

[0053] It should be noted that the two side surfaces of the focusing coupling component 18 can abut against or have an air gap with the end faces of the two optical fibers 2. Specifically, one side surface of the focusing coupling component 18 can be positioned opposite to the end faces of the two optical fibers 2, while the other side surface of the focusing coupling component 18 abuts against or has an air gap with the end faces of the two optical fibers 2. Alternatively, one side surface of the focusing coupling component 18 can have an air gap with the end faces of the two optical fibers 2, while the other side surface of the focusing coupling component 18 abuts against or has an air gap with the end faces of the two optical fibers 2.

[0054] In some embodiments, the focusing coupling component 18 is configured to focus the incident beam to reduce the spot size, thereby increasing the misalignment tolerance to compensate for thermal deformation misalignment caused by the difference in thermal expansion coefficients between the connector body 13 and the focusing coupling component 18, so that the insertion loss between the two fiber 2 end faces remains stable in high and low temperature environments.

[0055] In some embodiments, such as Figure 29 and Figure 30As shown, the focusing coupling assembly 18 can include a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183 stacked together. The refractive index of the first light-transmitting refractive element 181 is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183; that is, the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 and the surface of the second light-transmitting refractive element 183 facing the first light-transmitting refractive element 181 are bonded together or filled with other light-transmitting layers. This improves the focusing effect of the focusing coupling assembly 18 on the light beam.

[0056] It should be noted that the number of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 included in the light-concentrating coupling assembly 18 can be one or more. The structure and arrangement of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 can be various, which will be described in detail below.

[0057] The number of the first light-transmitting and refractive element 181 can be one (e.g., ...). Figure 36 , Figure 37 ) or multiple (such as Figures 40 to 43 (As shown). When there are multiple first light-transmitting refractive elements 181, at least two first light-transmitting refractive elements 181 may have different or the same refractive index. That is, the refractive indices of multiple first light-transmitting refractive elements 181 may all be the same or all be different, or some of the first light-transmitting refractive elements 181 may all have the same refractive index, while the refractive indices of other first light-transmitting refractive elements 181 may be different.

[0058] The number of the second light-transmitting and refractive element 183 can be one (e.g., ...). Figure 36 , Figure 37 ) or multiple (such as Figures 40 to 43 (As shown). When there are multiple second light-transmitting refractive elements 183, at least two second light-transmitting refractive elements 183 may have different or the same refractive index. That is, the refractive indices of multiple second light-transmitting refractive elements 183 may all be the same or all be different, or some of the second light-transmitting refractive elements 183 may all have the same refractive index, while the refractive indices of other second light-transmitting refractive elements 183 may be different.

[0059] At least one first light-transmitting refractive element 181 may have a refractive index greater than that of the first light-transmitting refractive element 181. Alternatively, at least one second light-transmitting refractive element 183 may have a refractive index equal to that of the first light-transmitting refractive element 181. Alternatively, at least one second light-transmitting refractive element 183 may have a refractive index less than that of the first light-transmitting refractive element 181.

[0060] The first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 can be separately configured. Or, as... Figure 38 , Figure 39 As shown, the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 can also be integrated into one unit.

[0061] The materials of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 can be the same or different. When there are multiple first light-transmitting refractive elements 181, at least two of the first light-transmitting refractive elements 181 can be made of different or the same materials. When there are multiple second light-transmitting refractive elements 183, at least two of the second light-transmitting refractive elements 183 can be made of different or the same materials.

[0062] In some embodiments, the refractive index of the first light-transmitting refractive element 181 may be greater than or equal to 1.3 and less than or equal to 1.67. The refractive index of the first light-transmitting refractive element 181 may be 1.3, 1.34, 1.36, 1.38, 1.4, 1.42, 1.5, 1.6, etc., and is not limited here. Specifically, the material of the first light-transmitting refractive element 181 may include at least one of silicone, polyurethane, transparent resin, and fluorosilicone, so that the first light-transmitting refractive element 181 meets the requirements for transmittance and refractive index.

[0063] In some embodiments, the refractive index of the second light-transmitting refractive element 183 may be greater than or equal to 1.51 and less than or equal to 1.7. The refractive index of the second light-transmitting refractive element 183 may be 1.52, 1.54, 1.56, 1.58, 1.6, 1.62, etc., and is not limited thereto. Specifically, the material of the second light-transmitting refractive element 183 may include at least one of polyetherimide, cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyethersulfone, and polysulfone, so that the second light-transmitting refractive element 183 meets the requirements for transmittance and refractive index.

[0064] In some embodiments, the focusing coupling component 18 may have at least two optical channels 180, thereby enabling the focusing coupling component 18 to couple the end faces of at least two pairs of optical fibers 2 through the at least two optical channels 180.

[0065] In some embodiments, such as Figures 40 to 43 As shown, the focusing coupling assembly 18 may include at least one second light-transmitting refractive element 183 and at least two second light-transmitting refractive elements 183, with at least one second light-transmitting refractive element 183 located between two first light-transmitting refractive elements 181, and the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abutting against the end face of the corresponding optical fiber 2 or having an air gap.

[0066] In other embodiments, such as Figure 44, Figure 45 , Figures 47 to 50 As shown, the focusing coupling assembly 18 may include at least one first light-transmitting refractive element 181 and at least two second light-transmitting refractive elements 183, with at least one first light-transmitting refractive element 181 located between the two second light-transmitting refractive elements 183, and the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abutting against the end face of the corresponding optical fiber 2 or having an air gap.

[0067] In other embodiments, such as Figure 36 , Figure 37 and Figure 46 As shown, the focusing coupling assembly 18 may include a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 is in contact with the end face of the corresponding optical fiber 2 or has an air gap. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 is in contact with the end face of the corresponding optical fiber 2 or has an air gap.

[0068] In other embodiments, such as Figure 40 As shown, the light-concentrating coupling assembly 18 may include two second light-transmitting refractive elements 183 and two first light-transmitting refractive elements 181, with the two second light-transmitting refractive elements 183 located between the two first light-transmitting refractive elements 181, and an air gap between the two second light-transmitting refractive elements 183.

[0069] In other embodiments, such as Figure 41 As shown, the light-concentrating coupling assembly 18 may include two second light-transmitting refractive elements 183 and two first light-transmitting refractive elements 181. The two second light-transmitting refractive elements 183 are located between the two first light-transmitting refractive elements 181. The sides of the two second light-transmitting refractive elements 183 that are opposite to each other are recessed to form concave lenses 190 corresponding to the positions of the light channels 180.

[0070] In other embodiments, such as Figure 47 As shown, two first light-transmitting refractive elements 181 can be located between two second light-transmitting refractive elements 183, and there is an air gap between the two first light-transmitting refractive elements 181.

[0071] In other embodiments, such as Figure 48 , Figure 49 As shown, a concave lens 190 can be formed between two first light-transmitting refractive elements 181 and two second light-transmitting refractive elements 183, with the two first light-transmitting refractive elements 181 located between the two second light-transmitting refractive elements 183, and the sides of the two first light-transmitting refractive elements 181 opposite to each other corresponding to the position of the light channel 180.

[0072] In some embodiments, such as Figure 43As shown, when the side of the first light-transmitting refractive element 181 away from the second light-transmitting refractive element 183 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the first light-transmitting refractive element 181 away from the second light-transmitting refractive element 183 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187.

[0073] In some embodiments, such as Figure 50 As shown, when the side of the second light-transmitting refractive element 183 away from the first light-transmitting refractive element 181 has an air gap with the end face of the corresponding optical fiber 2, the side of the second light-transmitting refractive element 183 away from the first light-transmitting refractive element 181 corresponding to the position of the optical fiber 2 is either a plane or has a convex lens 187.

[0074] In some embodiments, the refractive index of the first light-transmitting refractive element 181 may be less than the refractive index of the second light-transmitting refractive element 183. A convex lens 187 may be provided on the side of the second light-transmitting refractive element 183 facing the first light-transmitting refractive element 181 at a position corresponding to the optical channel 180.

[0075] In some implementations, the refractive index of the first light-transmitting refractive element 181 can be greater than that of the second light-transmitting refractive element 183. A convex lens 187 can be provided on the side of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183, corresponding to a position in the optical channel 180.

[0076] In some embodiments, the second light-transmitting refractive element 183 may be configured to focus the incident light beam, thereby enabling the focusing coupling assembly 18 to focus the light beam transmitted between the end faces of the optical fibers 2 on both sides.

[0077] In some embodiments, the material of the first light-transmitting refractive element 181 may include an elastic material, thereby enabling the first light-transmitting refractive element 181 to elastically abut against the end face of the optical fiber 2.

[0078] In some embodiments, the second light-transmitting refractive element 183 may include at least one of a microlens array, a grating, a diffractive second light-transmitting refractive element 183, and a holographic second light-transmitting refractive element 183, thereby giving the second light-transmitting refractive element 183 a higher light-concentrating effect.

[0079] Among them, such as Figure 30 As shown, the microlens array can include biconvex microlenses. Specifically, convex lenses 187 are respectively provided on both sides of the microlens array at positions corresponding to the optical channel 180. When the light beam in the optical channel 180 exits from the convex lenses 187, it can be focused by the laser protrusions. The surface of the convex lens 187 can be a convex curved surface, which can be spherical or aspherical. The curvature of the surfaces of the convex lenses 187 distributed on both sides of the microlens array can be the same.

[0080] In other embodiments, such as Figure 35 As shown, convex lenses 187 can be protruded on both sides of the microlens array at positions corresponding to the optical channel 180, wherein the curvature of the surfaces of the convex lenses 187 distributed on both sides of the microlens array can be different.

[0081] Or, such as Figure 31 As shown, the microlens array can also include a single convex microlens, which can also give the microlens array a good light-gathering effect. Specifically, a convex lens 187 is provided on one side of the microlens array corresponding to the position of the optical channel 180. When the light beam in the optical channel 180 is emitted from the convex lens 187, it can be focused by the laser protrusion.

[0082] When the fiber optic connector 10 includes two connector bodies 13, and one of the connector bodies 13 and the adapter 12 are directly or indirectly connected through the locking assembly 11, and the other connector body 13 is snapped into the adapter 12, a convex lens 187 can be provided on one side of the microlens array facing one of the connector bodies 13, or a convex lens 187 can be provided on one side of the microlens array facing the other connector body 13.

[0083] In some embodiments, such as Figure 31 As shown, one side of the microlens array can be provided with a convex lens 187 corresponding to the optical channel 180, while the other side of the microlens array has a flat surface corresponding to the optical channel 180. Specifically, when the adapter 12 is connected to one of the connector bodies 13 via the locking assembly 11 and engaged with the other connector body 13, the side of the microlens array with the convex lens 187 can face one of the connector bodies 13, and the side of the microlens array with the flat surface corresponding to the optical channel 180 can face the other connector body 13; alternatively, the side of the microlens array with the convex lens 187 can face the other connector body 13, and the side of the microlens array with the flat surface corresponding to the optical channel 180 can face one of the connector bodies 13.

[0084] In other embodiments, such as Figure 32 and Figure 33 As shown, a convex lens 187 can be protruding from one side of the microlens array corresponding to the light channel 180, and a concave lens 190 can be formed on the surface of the other side corresponding to the light channel 180. When the adapter 12 is connected to one of the connector bodies 13 via the locking assembly 11 and engaged with the other connector body 13, the side of the microlens array with the convex lens 187 can face the other connector body 13, and the side of the microlens array with the concave lens 190 corresponding to the light channel 180 can face one of the connector bodies 13; or, as... Figure 34As shown, the side of the microlens array with the convex lens 187 can be oriented towards one of the connector bodies 13, while the side of the microlens array with the concave lens 190 corresponding to the optical channel 180 can be oriented towards the other connector body 13.

[0085] In some embodiments, such as Figure 35 As shown, at least one first light-transmitting refractive element 181 may include a concave lens 190 on the side facing away from the second light-transmitting refractive element 183, and the concave lens 190 corresponds to the position of the optical channel 180. Both first light-transmitting refractive elements 181 may include a concave lens 190 on the side facing away from the second light-transmitting refractive element 183. The number of concave lenses 190 included on the side of a first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 may be equal to the number of optical channels 180. The concave lens 190 may be a curved surface, which may be spherical or aspherical. When the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 is positioned opposite the end face of the optical fiber 2, the concave lens 190 of the first light-transmitting refractive element 181 may be in full or partially abutting against the end face of the optical fiber 2.

[0086] In some embodiments, such as Figures 36 to 39 As shown, when the first light-transmitting refractive element 181 or the second light-transmitting refractive element 183 is disposed opposite to the end face of the optical fiber 2, and a convex lens 187 is provided on the side of the first light-transmitting refractive element 181 or the second light-transmitting refractive element 183 facing the end face of the optical fiber 2 at the position corresponding to the optical channel 180, a cavity 189 can be opened on the side of the first light-transmitting refractive element 181 or the second light-transmitting refractive element 183 facing the end face of the optical fiber 2 at the position corresponding to the optical channel 180, and the convex lens 187 can be accommodated in the cavity 189.

[0087] In some embodiments, an antireflective film may be provided on at least one surface of the second light-transmitting refractive element 183 to improve the light transmittance of the second light-transmitting refractive element 183. Specifically, the antireflective film may be provided on both surfaces of the second light-transmitting refractive element 183, or it may be provided on one surface of the second light-transmitting refractive element 183. Of course, the former is beneficial to further improve the light transmittance of the second light-transmitting refractive element 183.

[0088] In some embodiments, the absolute value of the difference between the refractive index of the first light-transmitting refractive element 181 and the refractive index of the second light-transmitting refractive element 183 may be greater than or equal to 0.05. The difference between the refractive index of the first light-transmitting refractive element 181 and the refractive index of the second light-transmitting refractive element 183 may be 0.06, 0.07, 0.09, etc., and is not limited here.

[0089] In some embodiments, the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 can be made to fit against the side of the second light-transmitting refractive element 183. This helps to reduce the light beam loss that occurs when passing through the junction of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183.

[0090] In some embodiments, the focusing coupling assembly 18 may not include a refractive index matching liquid, that is, the refractive index matching liquid is not filled between the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 and the side surface of the second light-transmitting refractive element 183.

[0091] In other embodiments, the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 and the side of the second light-transmitting refractive element 183 may have an air gap, so that when the light beam passes through the focusing coupling assembly 18, it can also be focused by the laser coupling assembly.

[0092] Specifically, the air gap between the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 and the side surface of the second light-transmitting refractive element 183 can be less than or equal to 0.3 mm, so as to avoid the air gap between the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 and the side surface of the second light-transmitting refractive element 183 being too large, which would affect the focusing and coupling effect of the focusing coupling assembly 18 on the light beam.

[0093] The air gap between the surface of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183 and the side of the second light-transmitting refractive element 183 can be 0.05mm, 0.08mm, 0.1mm, 0.15mm, 0.2mm, 0.26mm, etc., and there is no limitation here.

[0094] In other embodiments, the focusing coupling assembly 18 may include a refractive index gradient material, the refractive index of which continuously and gradually changes along the stacking direction of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183. Specifically, the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) may be integrally formed from the refractive index gradient material, the refractive index of which continuously increases or decreases from one side surface of the focusing coupling assembly (18) to the other side surface along the stacking direction of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183). This causes the light beam to be continuously deflected as it passes through the focusing coupling assembly 18, thereby achieving light focusing. It should be noted that the refractive index gradient material may be a single material whose refractive index continuously changes along the stacking direction, and any separate stacking scheme with a different refractive index than the aforementioned first light-transmitting refractive element 181 and second light-transmitting refractive element 183 can achieve light focusing. A refractive index gradient material (GRIN, Gradient-Index Material) is a material whose refractive index continuously and gradually changes along the spatial direction.

[0095] The refractive index of the refractive index gradient material changes continuously and gradually along the extension direction of the optical channel 180 of the focusing coupling component 18. For example, the refractive index increases or decreases continuously from one surface of the focusing coupling component 18 to the other surface along the extension direction of the optical channel 180, thereby continuously deflecting and focusing the light beam passing through the optical channel 180. Thus, the focusing coupling component 18 can focus the light beam simply by utilizing the refractive index gradient of the refractive index gradient material, eliminating the need for stacking two transmissive refractive elements with different refractive indices, or for using geometric surfaces such as convex or concave lenses. It should be noted that the interface of the refractive index gradient material has no abrupt change in refractive index and no air gap, which helps reduce interface reflection loss when the light beam passes through, simplifies the structure of the focusing coupling component 18, and improves the focusing effect.

[0096] A single-layer lens array can be constructed using a refractive index gradient material, meaning that the focusing coupling component 18 adopts a single-layer lens array structure. The single-layer lens array includes at least two lens units corresponding one-to-one with at least two optical channels 180. Each lens unit focuses the light beam passing through the corresponding optical channel 180 through the refractive index gradient of the refractive index gradient material.

[0097] The focusing coupling component 18 of the refractive index gradient material can be fabricated using processes known in the art. For example, a monomer diffusion copolymerization method can be used to diffuse copolymerize monomers with different refractive indices, so that the refractive index of the resulting polymer changes continuously and gradually along a set direction; or, a photopolymerization method can be used to control the exposure dose to make the refractive index change continuously and gradually along a set direction, and the exposure dose can be controlled point by point to form an array with a refractive index gradient; or, a multilayer co-extrusion or lamination method can be used to co-extrude or laminate multiple polymers with different refractive indices into one piece to approximately achieve a step-like gradient of the refractive index.

[0098] In some embodiments, auxiliary mounting structures 184 may be provided on both sides of the second light-transmitting refractive element 183. The auxiliary mounting structures 184 are configured to mount the first light-transmitting refractive element 181, thereby making the connection between the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 more stable.

[0099] The auxiliary mounting structure 184 may include at least one mounting groove 185, and at least a portion of the first light-transmitting refractive element 181 may be mounted in the at least one mounting groove 185, thereby improving the connection stability of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183.

[0100] Alternatively, the auxiliary mounting structure 184 may include at least one mounting protrusion, which is inserted into the first light-transmitting refractive element 181, thereby improving the connection stability of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183.

[0101] Specifically, the second light-transmitting and refractive element 183 is provided with mounting grooves 185 on both sides, and a convex lens 187 is provided on the bottom surface of the mounting groove 185.

[0102] In other embodiments, the light-concentrating coupling assembly 18 may further include a light-transmitting refractive layer disposed between the second light-transmitting refractive element 183 and the first light-transmitting refractive element 181. The material of the light-transmitting refractive layer includes at least one selected from cyclic olefin copolymers, cyclic olefin polymers, polymethyl methacrylate, and polycarbonate. Thus, the light-concentrating and coupling effects of the light-concentrating coupling assembly 18 can be further improved through the light-transmitting refractive layer.

[0103] like Figure 3As shown, the fiber optic connector 10 also includes a positioning rod 16 and a ferrule 14 for direct or indirect connection with the end of the optical fiber 2. The ferrule 14 is mounted on the connector body 13 and has a positioning hole 141 extending through it in the insertion direction. The positioning rod 16 passes through the positioning hole 141 and extends out of the ferrule 14 on one side in the insertion direction. The positioning rod 16 is used to insert into the positioning holes 141 of two opposing ferrules 14 to position the two opposing ferrules 14. The positioning rod 16 can be a guide pin or other rod-shaped structure capable of positioning two opposing ferrules 14.

[0104] In some embodiments, the positioning rod 16 can be inserted into the positioning hole 141 to mount the positioning rod 16 to the ferrule 14; or the positioning rod 16 can be inserted into the adapter 12 to mount the positioning rod 16 to the adapter 12; or the positioning rod 16 can be inserted into the connector body 13 to mount the positioning rod 16 to the connector body 13.

[0105] In some embodiments, a through hole 186 may be provided in the focusing coupling assembly 18 for the positioning rod 16 to pass through. When the positioning rod 16 passes through the through hole 186 of the focusing coupling assembly 18, the focusing coupling assembly 18 can be positioned, which is beneficial to improving the focusing coupling effect of the laser coupling assembly on the optical fibers 2 on both sides.

[0106] Specifically, a through hole 186 is provided in the second light-transmitting and refractive element 183. Mounting grooves 185 are provided on both sides of the second light-transmitting and refractive element 183. There are two through holes 186. The two through holes 186 are respectively located on the sidewalls of the mounting grooves 185.

[0107] In other embodiments, such as Figure 51 As shown, the fiber optic connector 10 may not include the focusing coupling assembly 18. Specifically, the connector body 13 is provided with a ferrule 14 configured to be directly or indirectly connected to the end of the fiber 2, so that the ferrules 14 provided on the two connector bodies 13 can abut against each other, thereby connecting the end face optical paths of the fiber 2 connected to the two ferrules 14.

[0108] That is, when the two connector bodies 13 are directly or indirectly connected to each other, or when the two connector bodies 13 are respectively connected to the adapter 12, and when other conditions cause the ends of the optical fibers 2 connected to the two ferrules 14 to be coupled to each other, the two ferrules 14 can be made to abut against each other, thereby causing the ends of the optical fibers 2 connected to the two ferrules 14 to be coupled to each other.

[0109] In some embodiments, a ferrule 14 may be provided on the connector body 13, which is connected to the end of at least one optical fiber 2, thereby allowing the connector body 13 to be indirectly connected to the end of at least one optical fiber 2 via the ferrule 14.

[0110] In other embodiments, the connector body 13 can be directly connected to the end of at least one optical fiber 2. As long as the connector body 13 is connected to the adapter 12, the end face of at least one optical fiber 2 connected to the connector body 13 can be optically connected to the end face of at least another optical fiber 2 directly or indirectly connected to the adapter 12.

[0111] In some embodiments, the fiber optic connector 10 may include an adapter 12 and two connector bodies 13, which can be connected to the adapter 12. One connector body 13 is configured to be directly or indirectly connected to the end of at least one optical fiber 2, and the other connector body 13 is configured to be directly or indirectly connected to the end of another optical fiber 2. The other connector body 13 is also directly or indirectly connected to the adapter 12, thereby allowing the adapter 12 to be directly or indirectly connected to the end of the other optical fiber 2. When one connector body 13 is connected to the adapter 12, the end face of the optical fiber 2 directly or indirectly connected to that connector body 13 can be optically connected to the end face of the other optical fiber 2 directly or indirectly connected to the adapter 12.

[0112] It is understood that "one of the connector bodies 13" and "the other connector body 13" refer to two different connector bodies 13. When the two connector bodies 13 are connected to the adapter 12, the end face of at least one optical fiber 2 connected to one of the connector bodies 13 can be optically connected to at least another optical fiber 2 connected to the other connector body 13 within the adapter 12.

[0113] The two connector bodies 13 can be detachably connected to the adapter 12, or they can be non-detachably connected. The connection methods between the two connector bodies 13 and the adapter 12 can include snap-fit, adhesive bonding, welding, screw connection, magnetic connection, etc. The requirement is that after the two connector bodies 13 are connected to the adapter 12, the end face of at least one optical fiber 2 connected to one of the connector bodies 13 can be optically connected to the end face of at least one other optical fiber 2 directly or indirectly connected to the adapter 12.

[0114] In other embodiments, the fiber optic connector 10 may not include the adapter 12. Instead, the two connector bodies 13 may be directly or indirectly connected to each other, thereby enabling optical communication between the end faces of the optical fibers 2 connected to the two connector bodies 13. The two connector bodies 13 can be directly or indirectly connected by means of snap-fit, bonding, welding, screw connection, magnetic connection, etc., as long as the end faces of the optical fibers 2 connected to the two connector bodies 13 can be aligned and optically connected after the two connector bodies 13 are directly or indirectly connected.

[0115] like Figure 3 and Figure 4 As shown, the adapter 12 may include a mounting cavity 1202, and the connector body 13 is configured to be inserted into the mounting cavity 1202 along the insertion direction, thereby connecting the connector body 13 to the adapter 12. The mounting cavity 1202 can pass through the adapter 12, and the two connector bodies 13 are respectively inserted into the mounting cavity 1202 from both ends of the adapter 12, thereby connecting the two connector bodies 13 to the adapter 12, and further enabling the end-face optical path of the optical fiber 2 connected to the two connector bodies 13 to be connected.

[0116] Wherein, when another connector body 13 is directly or indirectly connected to adapter 12, the end of at least one other optical fiber 2 connected to the other connector body 13 is located within the mounting cavity 1202. Alternatively, when adapter 12 is directly or indirectly connected to at least one other optical fiber 2, the end of at least one other optical fiber 2 is located within the mounting cavity 1202 of adapter 12.

[0117] In some embodiments, such as Figure 3 As shown, the connector body 13 can be configured to be inserted into the mounting cavity 1202 along the insertion direction, so that the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 is optically connected to the end face of at least another optical fiber 2 in the mounting cavity 1202 of the adapter 12.

[0118] The fiber optic connector 10 may further include a locking assembly 11, which is configured to provide locking force to the connector body 13. It should be noted that the locking assembly 11 may provide locking force to both connector bodies 13, or only to one of the connector bodies 13.

[0119] Continue to refer to Figure 3 The locking assembly 11 may include a first locking structure 111 and a second locking structure 112. The adapter 12 is provided with at least one of the first locking structure 111 and the second locking structure 112. The connector body 13 is provided with at least another of the first locking structure 111 and the second locking structure 112. The first locking structure 111 and the second locking structure 112 are configured to engage and disengage from each other.

[0120] When the first locking structure 111 and the second locking structure 112 are engaged, the locking assembly 11 provides a locking force to the connector body 13 to lock the connector body 13 and the adapter 12, maintaining a stable connection between them and improving the stability of the optical path communication between the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 and the end face of at least another optical fiber 2 in the mounting cavity 1202 of the adapter 12. When the first locking structure 111 and the second locking structure 112 disengage, the locking force provided by the locking assembly 11 to the connector body 13 disappears, unlocking the connector body 13 and the adapter 12, facilitating the separation of the connector body 13 and the adapter 12.

[0121] In some embodiments, when the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 and the second locking structure 112 engage with each other to lock the connector body 13 and the adapter 12; when the connector body 13 continues to move from the first position to the second position along the insertion direction, the first locking structure 111 and the second locking structure 112 disengage from each other to unlock the connector body 13 and the adapter 12.

[0122] When the connector body 13 continues to move from the first position to the second position along the insertion direction, the first locking structure 111 and the second locking structure 112 disengage from each other to unlock the connector body 13 and the adapter 12. Then, the connector body 13 and the adapter 12 can be separated by applying a pulling force in the opposite direction of the insertion direction to the connector body 13.

[0123] Thus, by controlling the distance the connector body 13 moves along the insertion direction, the locking assembly 11 can lock and unlock the connector body 13 and the adapter 12. This is not only convenient to operate, but also eliminates the need to reserve space for unlocking the connector body 13 and the adapter 12 on the side of the fiber optic connector 10. This helps to reduce the gap between the fiber optic connectors 10, enabling the fiber optic connectors 10 to be used in higher density fiber optic interconnection scenarios.

[0124] In some embodiments, such as Figure 4 As shown, the fiber optic connector 10 may also include a push-back structure 17, which is configured to apply a reset force opposite to the insertion direction to the connector body 13 to drive the connector body 13 out.

[0125] When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 and the second locking structure 112 engage with each other to lock the connector body 13 and the adapter 12; when the connector body 13 continues to move from the first position to the second position along the insertion direction, the first locking structure 111 and the second locking structure 112 disengage from each other, and the reverse push structure 17 drives the connector body 13 to exit in the reverse direction along the insertion direction.

[0126] The fiber optic connector 10 provided in this application embodiment includes an adapter 12 with a mounting cavity 1202 for accommodating the end of an optical fiber 2, so that at least one connector body 13 is directly or indirectly connected to at least one optical fiber 2 and inserted into the mounting cavity 1202 in the insertion direction, thereby enabling optical path communication between the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 and the end face of at least another optical fiber 2 in the mounting cavity 1202.

[0127] Based on this, the fiber optic connector 10 further includes a locking assembly 11 configured to provide a locking force to the connector body 13, and a push-back structure 17 configured to apply a reset force opposite to the insertion direction to the connector body 13 to drive the connector body 13 out. The locking assembly 11 includes a first locking structure 111 and a second locking structure 112. The adapter 12 is provided with at least one of the first locking structure 111 and the second locking structure 112. The connector body 13 is provided with at least one of the first locking structure 111 and the second locking structure 112. The first locking structure 111 and the second locking structure 112 are configured to engage and disengage from each other. When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 and the second locking structure 112 engage with each other to lock the connector body 13 and the adapter 12. When the connector body 13 continues to move from the first position to the second position along the insertion direction, the first locking structure 111 and the second locking structure 112 disengage from each other. The reverse push structure 17 drives the connector body 13 to withdraw in the reverse direction along the insertion direction so as to separate the connector body 13 and the adapter 12.

[0128] Thus, by controlling the distance the connector body 13 moves along the insertion direction, the locking assembly 11 can lock and unlock the connector body 13 and the adapter 12. This is not only convenient to operate, but also eliminates the need to reserve space for unlocking the connector body 13 and the adapter 12 on the side of the fiber optic connector 10. This helps to reduce the gap between the fiber optic connectors 10, enabling the fiber optic connectors 10 to be used in higher density fiber optic interconnection scenarios.

[0129] It should be noted that the locking assembly 11 may include a first locking structure 111 and a second locking structure 112, or the locking assembly 11 may include multiple first locking structures 111 and multiple second locking structures 112.

[0130] In other embodiments, the fiber optic connector 10 may not include the push-back structure 17, but instead use a tension structure to indirectly apply a reset force opposite to the insertion direction to the connector body 13, thereby driving the connector body 13 to exit.

[0131] like Figure 23 As shown, a tension spring 175 and a limiting member 176 can be provided in the adapter 12 to form a tension structure. One end of the tension spring 175 in the opposite direction of insertion is connected to the adapter 12, and the other end of the tension spring 175 is connected to the limiting member 176. When the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, the connector body 13 can abut against the limiting member 176 and push the limiting member 176 to move in the insertion direction. During this process, the tension spring 175 is stretched by the limiting member 176, and the limiting member 176 receives the tension force applied by the tension spring 175 in the opposite direction of insertion. This tension force can be transmitted to the connector body 13 as a restoring force.

[0132] like Figure 3 As shown, at least one first locking structure 111 can be provided in the adapter 12, and at least one second locking structure 112 can be provided in the connector body 13. The first locking structure 111 provided in the adapter 12 and the second locking structure 112 provided in the connector body 13 can be engaged and disengaged from each other.

[0133] At least one first locking structure 111 may be provided on each of the opposite sides of the adapter 12. Specifically, at least one first locking structure 111 may be provided on each of the two sides of the adapter 12 in the width direction and / or thickness direction. The width direction, thickness direction and length direction are perpendicular to each other. The length direction is substantially parallel to the insertion direction.

[0134] Additionally, at least one second locking structure 112 may be provided on each of the opposite sides of the connector body 13. Specifically, at least one second locking structure 112 may be provided on each of the two sides of the connector body 13 in the width direction and / or thickness direction.

[0135] Or, such as Figures 4 to 6 As shown, the adapter 12 may be provided with a second locking structure 112 and the connector body 13 may be provided with a first locking structure 111. The second locking structure 112 provided on the adapter 12 and the first locking structure 111 provided on the connector body 13 can be engaged and disengaged from each other.

[0136] At least one second locking structure 112 may be provided on each of the opposite sides of the adapter 12. Specifically, at least one second locking structure 112 may be provided on each of the two sides of the adapter 12 in the width direction and / or thickness direction. The width direction, thickness direction, and length direction are perpendicular to each other. The length direction is substantially parallel to the insertion direction.

[0137] Additionally, at least one first locking structure 111 may be provided on each of the opposite sides of the connector body 13. Specifically, at least one first locking structure 111 may be provided on each of the two sides of the connector body 13 in the width direction and / or thickness direction.

[0138] Or, as Figure 7 As shown, the locking assembly 11 may include a plurality of first locking structures 111 and a plurality of second locking structures 112, with at least one first locking structure 111 and at least one second locking structure 112 disposed on the adapter 12, and at least one first locking structure 111 and at least one second locking structure 112 disposed on the connector body 13.

[0139] When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 located in the adapter 12 and the second locking structure 112 located in the connector body 13 engage with each other, and the second locking structure 112 located in the adapter 12 and the first locking structure 111 located in the connector body 13 engage to lock the connector body 13 and the adapter 12.

[0140] When the connector body 13 moves from the first position to the second position along the insertion direction, the first locking structure 111 located on the adapter 12 and the second locking structure 112 located on the connector body 13 disengage from each other, and the second locking structure 112 located on the adapter 12 and the first locking structure 111 located on the connector body 13 are unlocked to unlock the connector body 13 and the adapter 12.

[0141] In some embodiments, at least one first locking structure 111 may be provided on one side of the adapter 12, and at least one second locking structure 112 may be provided on the other side of the adapter 12. Specifically, the first locking structure 111 may be provided on one side of the adapter 12 in the width direction or the thickness direction, and the second locking structure 112 may be provided on the other side of the adapter 12 in the width direction or the thickness direction.

[0142] Additionally, at least one second locking structure 112 may be provided on one side of the connector body 13, and at least one first locking structure 111 may be provided on the other side of the connector body 13. Specifically, the second locking structure 112 may be provided on one side of the connector body 13 in the width or thickness direction, and the first locking structure 111 may be provided on the other side of the connector body 13 in the width or thickness direction.

[0143] In some embodiments, the first locking structure 111 may be provided with a guide structure, which includes a first guide portion and a second guide portion. The second locking structure is provided with a locking portion, which is configured to lock and unlock with the first locking structure 111. During the process of the connector body 13 being inserted into the mounting cavity 1202 along the insertion direction to a first position, the first guide portion guides the locking portion from a position separated from the first locking structure 111 to a position locked with the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are engaged with each other. During the process of the connector body 13 continuing to move along the insertion direction from the first position to the second position, the second guide portion guides the locking portion from a position locked with the first locking structure 111 to a position unlocked from the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are disengaged from each other. Thus, the locking portion of the second locking structure 112 can be guided by the guide structure, so that the first locking structure 111 and the second locking structure 112 can engage and disengage more smoothly.

[0144] The guide structure may include the groove 1111 described below, or it may be a protrusion, a track, or other structure that can guide the locking portion of the second locking structure 112. The locking portion of the second locking structure 112 may be the locking part 1124 described below, or it may be other structures that can lock and unlock with the first locking structure 111.

[0145] In some embodiments, such as Figures 8 to 12 As shown, the first locking structure 111 may be provided with a slide groove 1111 to form a guide structure. The slide groove 1111 includes a sliding section 1112, a locking section 1114 and a sliding section 1116. The sliding section 1112 and the sliding section 1116 are arranged side by side and extend along the insertion direction respectively. The locking section 1114 is connected between the sliding section 1112 and the sliding section 1116. The second locking structure 112 is provided with a locking part 1124 to form a locking part.

[0146] Among them, such as Figure 8 As shown, the connector body 13 is inserted into the mounting cavity 1202 to the first position (e.g., Figure 8 During the process (as shown in the sixth figure), the locking part 1124 slides along the sliding section 1112 to the locking section 1114. The inner side of the locking section 1114 is configured to abut against the locking part 1124 so that the first locking structure 111 and the second locking structure 112 engage with each other.

[0147] Thus, after aligning the connector body 13 with the mounting cavity 1202 of the adapter 12, the user can apply a pushing force along the insertion direction to the connector body 13 to insert it into the mounting cavity 1202 of the adapter 12, causing the connector body 13 to move to a first position relative to the adapter 12, so that the first locking structure 111 and the second locking structure 112 can be engaged with each other, thereby stably connecting the connector body 13 and the adapter 12 together.

[0148] In some embodiments, the connector body 13 can be inserted into the mounting cavity 1202 of the adapter 12 along the insertion direction and moved to a first position, so that the locking part 1124 slides along the sliding section 1112 to the locking section 1114, and the first locking structure 111 and the second locking structure 112 engage with each other.

[0149] In other embodiments, the connector body 13 may be inserted into the mounting cavity 1202 of the adapter 12 a certain distance along the insertion direction, causing the locking portion 1124 to move along the sliding section 1112 to the connection point of the sliding section 1112 and the locking section 1114. Then, by moving the connector body 13 a certain distance in the opposite direction of the insertion direction, the locking portion 1124 slides from the connection point of the sliding section 1112 and the locking section 1114 into the locking section, thereby moving the connector body 13 to the first position.

[0150] Specifically, after the connector body 13 is moved a certain distance along the insertion direction, the thrust applied to the connector body 13 is reduced, so that the connector body 13 is pulled to the first position in the opposite direction of the insertion direction under the action of the reset force applied by the reverse thrust structure 17.

[0151] Alternatively, a tension structure can be provided. After the connector body 13 is moved a certain distance along the insertion direction, a tension force is applied to the connector body 13 in the opposite direction of the insertion direction to pull the connector body 13 to the first position.

[0152] like Figure 9 As shown, when the connector body 13 moves from the first position to the second position along the insertion direction, the locking part 1124 slides from the locking section 1114 to the sliding section 1116, so that the first locking structure 111 and the second locking structure 112 disengage from each other.

[0153] Thus, when it is necessary to separate the connector body and the adapter 12, a pushing force can be applied to the connector body 13 again to push the connector body 13 to move from the first position to the second position along the insertion direction, so that the locking part 1124 slides from the locking section 1114 to the sliding section 1116, so that the first locking structure 111 and the second locking structure 112 disengage from each other, and the locking part 1124 can slide out in the sliding section 1116 in the opposite direction of the insertion direction, so that the adapter 12 and the connector body 13 can be separated from each other.

[0154] In some embodiments, such as Figure 8 As shown, the end of the sliding section 1112 away from the locking section 1114 includes an inlet 1113 for the locking part 1124 to slide into. At least a portion of the locking section 1114 is bent toward the inlet 1113 to form a locking groove 1115. When the connector body 13 is in the first position, the locking part 1124 is located in the locking groove 1115. Thus, when the connector body 13 moves to the first position and the locking part 1124 slides into the locking groove 1115 of the locking section 1114, the inner side of the locking groove 1115 on the opposite side of the insertion direction can abut against the locking part 1124 to restrict the reverse movement of the locking part 1124 in the insertion direction, thereby restricting the reverse movement of the connector body 13 relative to the adapter 12 in the insertion direction, thereby locking the connector body 13 and the adapter 12 together to improve the connection stability of the connector body 13 and the adapter 12.

[0155] Specifically, by bending at least a portion of the locking segment 1114 toward the entrance 1113 to form a locking groove 1115, the locking segment 1114 can have a recess that is recessed toward the entrance 1113, and the structures located on both sides of the recess extend away from the entrance 1113 to form a locking protrusion and a step portion. The locking protrusion and step portion can limit the locking portion 1124, so that the locking portion 1124 is stably held in the recess.

[0156] In some embodiments, when the first locking structure 111 is provided on the adapter 12, one end of the sliding section 1112 and the sliding section 1116 of the slide groove 1111 along the insertion direction is respectively connected to the locking section 1114. This allows the connector body 13 to be inserted into the mounting cavity 1202 of the adapter 12 to the first position. During this process, the locking part 1124 located on the connector body 13 can enter the sliding section 1112 from the inlet 1113 of the sliding section 1112 of the slide groove 1111 on the adapter 12 and slide from the sliding section 1112 to the locking section 1114. When the connector body 13 moves from the first position to the second position along the insertion direction, the locking part 1124 can enter the sliding section 1116 so that the locking part 1124 can slide out in the opposite direction along the insertion direction within the sliding section 1116, thereby separating the adapter 12 and the connector body 13.

[0157] In other embodiments, such as Figure 13 and Figure 15 As shown, when the first locking structure 111 is provided on the connector body 13, the sliding section 1112 and the sliding section 1116 of the slide groove 1111 are respectively connected to the locking section 1114 in the opposite direction of the insertion direction. This allows the locking part 1124 located on the adapter 12 to enter the sliding section 1112 from the entrance 1113 of the sliding section 1112 of the slide groove 1111 on the connector body 13 and slide from the sliding section 1112 to the locking section 1114. When the connector body 13 moves from the first position to the second position in the insertion direction, the locking part 1124 can enter the sliding section 1116 so that the locking part 1124 can slide out in the sliding section 1116 in the insertion direction, thereby separating the adapter 12 and the connector body 13.

[0158] In some embodiments, such as Figure 8 As shown, the slide groove 1111 may further include an inlet section 1118 extending in the insertion direction. The ends of the sliding in section 1112 and the sliding out section 1116 away from the locking section 1114 are respectively connected to one end of the inlet section 1118. The other end of the inlet section 1118 includes an opening for the locking part 1124 to slide in or out. Thus, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, the locking part 1124 can be guided by the inlet section 1118, allowing it to more accurately enter the sliding inlet section 1112 of the slide groove 1111. After the locking part 1124 slides from the locking section 1114 of the slide groove 1111 into the sliding out section 1116, the locking part 1124 can slide along the sliding out section 1116 into the inlet section 1118 and out of the inlet section 1118, facilitating the separation of the adapter 12 and the connector body 13.

[0159] The width of the entrance section 1118 can be gradually increased along the direction of the locking section 1114, thereby enabling the entrance section 1118 to be flared out, which is beneficial to improving the guiding effect of the entrance section 1118 on the locking part 1124.

[0160] Specifically, the end of the sliding section 1112 away from the locking section 1114 includes an inlet 1113 for the locking part 1124 to slide into. The end of the sliding section 1116 away from the locking section 1114 includes an outlet 1117 for the locking part 1124 to slide out. The inlet 1113 of the sliding section 1112 and the outlet 1117 of the sliding section 1116 are respectively connected to the end of the inlet section 1118 near the locking section 1114. The distance between the sliding section 1112 and the sliding section 1116 gradually increases in the direction away from the inlet section 1118. One end of the locking section 1114 is connected to the end of the sliding section 1112 away from the inlet 1113, and the other end of the locking section 1114 is connected to the end of the sliding section 1116 away from the outlet 1117. A portion of the locking section 1114 bends toward the inlet 1113 or the outlet 1117, thereby connecting the sliding section 1112, the locking section 1114 and the sliding section 1116 to form a heart-shaped groove. When the locking part 1124 slides along the sliding section 1112 to the connection between the sliding section 1112 and the locking section 1114, the locking part 1124 can enter the locking section 1114 by moving the connector body 13 in the opposite direction of the insertion direction. When the connector body 13 moves from the first position along the insertion direction, the locking part 1124 can move along the locking section 1114 to the connection between the locking section 1114 and the sliding section 1116. Then, by moving the connector body 13 in the opposite direction along the insertion direction, the locking part 1124 can enter the sliding section 1116 so that the locking part 1124 can slide out of the slide groove 1111 through the sliding section 1116, thereby unlocking the connector body 13 and the adapter 12.

[0161] In other embodiments, such as Figure 11 As shown, the end of the sliding section 1112 away from the locking section 1114 includes an inlet 1113 for the locking part 1124 to slide into, and the end of the sliding section 1116 away from the locking section 1114 includes an outlet 1117 for the locking part 1124 to slide out. The inlet 1113 of the sliding section 1112 and the outlet 1117 of the sliding section 1116 can be independent of each other. This improves the anti-split effect of the slide groove 1111 and reduces the likelihood that the locking part 1124 will accurately enter the inlet 1113 of the sliding section 1112 when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, rather than easily entering the outlet 1117 of the sliding section 1116.

[0162] In some embodiments, such as Figure 15As shown, the end of the sliding section 1116 away from the locking section 1114 includes an outlet 1117 for the locking part 1124 to slide out. The outlet 1117 can be located on the inner side of the sliding section 1112, and the bottom surface of the sliding section 1116 at the outlet 1117 is higher than the bottom surface of the sliding section 1112. Because the bottom surface of the sliding section 1116 at the outlet 1117 is higher than the bottom surface of the sliding section 1112, when the locking part 1124 slides along the sliding section 1112 towards the locking section 1114, the locking part 1124 is less likely to accidentally enter the outlet 1117 of the sliding section 1116, and can slide more accurately from the sliding section 1112 to the locking section 1114 along a predetermined trajectory.

[0163] In some embodiments, the sliding section 1112, locking section 1114 and sliding section 1116 of the slide 1111 can be connected in sequence, so that the slide 1111 extends continuously from the inlet 1113 of the sliding section 1112 to the outlet 1117 of the sliding section 1116.

[0164] In other embodiments, such as Figure 12 As shown, the slide 1111 can also include multiple non-continuously arranged groove segments 1119, with adjacent groove segments 1119 spaced apart. That is, the slide 1111 extends non-continuously from the inlet 1113 of the sliding entry section 1112 to the outlet 1117 of the sliding exit section 1116. It is only necessary to ensure that the locking part 1124 can enter the slide 1111 from the inlet 1113 of the sliding entry section 1112 and slide along the slide 1111 to the outlet 1117 of the sliding exit section 1116.

[0165] The sliding section 1112 may include at least one groove segment 1119, the locking section 1114 may include at least one groove segment 1119, and the sliding section 1116 may include at least one groove segment 1119. Alternatively, the sliding section 1112, the locking section 1114, and the sliding section 1116 may be discontinuously arranged in the extending direction of the slide groove 1111. This allows the locking portion 1124 to slide stably within the sliding section 1112, the locking section 1114, and the sliding section 1116.

[0166] In some embodiments, the end of the sliding section 1112 away from the locking section 1114 includes an inlet 1113 for the locking part 1124 to slide into, and the end of the sliding section 1116 away from the locking section 1114 includes an outlet 1117 for the locking part 1124 to slide out. This allows the locking part 1124 to be configured to slide unidirectionally from the inlet 1113 to the outlet 1117. Consequently, the locking part 1124 can slide unidirectionally within the groove 1111, reducing the risk of the locking part 1124 accidentally entering the outlet 1117 of the sliding section 1116, or sliding out in the opposite direction from the inlet 1113 of the sliding section 1112. This improves the stability of locking and unlocking the connector body 13 and the adapter 12.

[0167] In some embodiments, at least one of the first locking structure 111 and the second locking structure 112 may be disposed within the mounting cavity 1202. This allows the first locking structure 111 and / or the second locking structure 112 within the mounting cavity 1202 to be protected by the sidewall of the adapter 12, reducing the risk of damage to the locking assembly 11 due to collisions with other structures.

[0168] In other embodiments, at least one of the first locking structure 111 and the second locking structure 112 may be located on the outside of the adapter 12. This also allows the first locking structure 111 of the adapter 12 and the second locking structure 112 of the connector body 13 to engage and disengage, or for the second locking structure 112 of the adapter 12 and the first locking structure 111 of the connector body 13 to engage and disengage.

[0169] In some embodiments, the other of the first locking structure 111 and the second locking structure 112 may be located on the outside of the connector body 13. Thus, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, it facilitates the engagement and disengagement of the second locking structure 112 of the connector body 13 and the first locking structure 111 of the adapter 12, or facilitates the engagement and disengagement of the first locking structure 111 of the connector body 13 and the second locking structure 112 of the adapter 12.

[0170] In some embodiments, such as Figure 10 As shown, the second locking structure 112 can be elastic. The second locking structure 112 is provided with a locking part, which is configured to lock and unlock with the first locking structure 111. During the process of the connector body 13 being inserted into the mounting cavity 1202 to the first position along the insertion direction, the locking part uses the elastic deformation of the second locking structure 112 to move from the position separated from the first locking structure 111 to the position locked with the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are engaged with each other. During the process of the connector body 13 continuing to move from the first position to the second position along the insertion direction, the locking part uses the elastic deformation of the second locking structure 112 to move from the position locked with the first locking structure 111 to the position unlocked from the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are disengaged from each other.

[0171] The second locking structure 112 can be an elastic deformation structure such as an elastic arm, an elastic sheet, or an elastic body, and there are no restrictions here.

[0172] In some embodiments, such as Figure 2As shown, the second locking structure 112 may further include a swing arm 1121, one end of which is provided with a locking part 1124. It is understood that when the locking part 1124 slides along the slide section 1112 of the slide groove 1111 from the inlet 1113 to the outlet 1117 of the slide section 1116, the locking part 1124 will have a certain displacement in a direction perpendicular to the insertion direction. By connecting one end of the swing arm 1121 to the locking part 1124, when the locking part 1124 is displaced in a direction perpendicular to the insertion direction, the swing arm 1121 can remain connected to the locking part 1124, which helps to improve the sliding stability of the locking part 1124 within the slide groove 1111. At the same time, when the locking part 1124 slides out of the slide groove 1111, the locking part 1124 can also be moved to a predetermined position by swinging the swing arm 1121 so that the locking part 1124 can accurately enter the slide section 1112 from the entrance 1113 of the slide section 1112 of the slide groove 1111.

[0173] The locking part 1124 can be located at one end of the swing arm 1121 along the insertion direction, or at the opposite end of the swing arm 1121 along the insertion direction, depending on the structure and location of the second locking structure 112.

[0174] In some embodiments, the first locking structure 111 and / or the second locking structure 112 may further include limiting portions 1312, which are disposed on both sides of the swing arm 1121 along the swing direction. The limiting portions 1312 are used to abut against the swing arm 1121 to limit the swing angle of the swing arm 1121. Thus, the swing angle of the swing arm 1121 can be limited by the limiting portions 1312, thereby controlling the displacement distance of the locking portion 1124 in the direction perpendicular to the insertion direction.

[0175] In some embodiments, the swing arm 1121 may be elastic; or, the swing arm 1121 may be a spring steel wire. Thus, when the locking part 1124 slides out of the slide groove 1111, the swing arm 1121 can automatically return the locking part 1124 to the predetermined position under the action of its own elastic force.

[0176] In some embodiments, the material of the swing arm 1121 may include at least one of stainless steel, carbon steel, aluminum alloy, titanium alloy, copper alloy, nickel-based alloy, spring steel, polyetheretherketone, polyoxymethylene, polycarbonate, acetal, polybutylene terephthalate, and glass fiber reinforced nylon. This allows the swing arm 1121 to possess good elasticity and high strength.

[0177] like Figure 2As shown, the connector body 13 is provided with a second locking structure 112, which allows the locking part 1124 of the second locking structure 112 located on the connector body 13 to be located at one end of the swing arm 1121 along the insertion direction, and the end of the swing arm 1121 away from the locking part 1124 to be connected to the connector body 13, so that the locking part 1124 is closer to the slide groove 1111 of the first locking structure 111, which facilitates the locking part 1124 to quickly enter the slide groove 1111, and helps to shorten the length of the connector body 13 and / or the adapter 12 in the insertion direction.

[0178] Of course, such as Figure 5 As shown, the adapter 12 may also have a second locking structure 112. The locking part 1124 of the second locking structure 112 of the adapter 12 is located at one end of the swing arm 1121 along the insertion direction, and the end of the swing arm 1121 away from the locking part 1124 is connected to the adapter 12.

[0179] In other embodiments, the connector body 13 may also have a second locking structure 112, with the locking portion 1124 of the second locking structure 112 located at one end of the swing arm 1121 opposite to the insertion direction, and the end of the swing arm 1121 away from the locking portion 1124 connected to the connector body 13. Alternatively, the adapter 12 may also have a second locking structure 112, with the locking portion 1124 of the second locking structure 112 located at one end of the swing arm 1121 opposite to the insertion direction, and the end of the swing arm 1121 away from the locking portion 1124 connected to the adapter 12. During the process of inserting the connector body 13 into the mounting cavity 1202 to the first position, the locking part 1124 can slide along the sliding section 1112 to the locking section 1114 to engage the first locking structure 111 and the second locking structure 112. When the connector body 13 moves from the first position to the second position along the insertion direction, the locking part 1124 can slide from the locking section 1114 to the sliding out section 1116 to unlock the first locking structure 111 and the second locking structure 112.

[0180] In some embodiments, the swing arm 1121 may extend along the insertion direction, and the locking portion 1124 may protrude from the outer periphery of the swing arm 1121. This facilitates the insertion of the locking portion 1124 into the inlet 1113 of the sliding section 1112 of the slide groove 1111, and reduces the space occupied by the swing arm 1121 during its swing, which is beneficial for miniaturizing the fiber optic connector 10.

[0181] In this embodiment, the locking part 1124 and the swing arm 1121 can be integrally connected or separately provided. The surface of the locking part 1124 that abuts against the inner surface of the slide groove 1111 can be a convex curved surface. The locking part 1124 can be a fixed pin, elastic pin, ball, spring, convex ball or convex post, or other structures that can slide along the slide groove.

[0182] In some embodiments, when the second locking structure 112 is provided on the connector body 13, the swing arm 1121 can be fixedly installed on the connector body 13 so that the position of the swing arm 1121 relative to the connector body 13 remains stable when the swing arm 1121 is not subjected to external force. This is beneficial for the swing arm 1121 to drive the locking part 1124 to move to a predetermined position after the locking part 1124 exits the slide groove 1111.

[0183] In some embodiments, such as Figure 2 and Figure 3 As shown, a first connecting structure 1313 can be provided in one of the swing arm 1121 and the connector body 13, and a first connecting hole 1122 can be provided in the other of the swing arm 1121 and the connector body 13. By inserting the first connecting structure 1313 into the first connecting hole 1122, the swing arm 1121 can be fixedly installed on the connector body 13. Thus, the connection between the swing arm 1121 and the connector body 13 can be made more stable and convenient.

[0184] The connector body 13 may further include a cover portion 1332, which covers at least a portion of the first connecting structure 1313 and / or at least a portion of the first connecting hole 1122 to prevent the first connecting structure 1313 from dislodging from the first connecting hole 1122. Thus, the cover portion 1332 can limit the movement of the swing arm 1121, improving the connection stability between the swing arm 1121 and the connector body 13.

[0185] Specifically, a first connecting structure 1313 can be protruded from the outer periphery of the connector body 13, and a first connecting hole 1122 can be opened at the end of the swing arm 1121 away from the locking part 1124. The radial cross section of the first connecting hole 1122 is a non-circular cross section. The first connecting structure 1313 is inserted into the first connecting hole 1122, and the shape of the first connecting structure 1313 is adapted to the shape of the first connecting hole 1122, so that the swing arm 1121 and the connector body 13 are fixedly connected.

[0186] In other embodiments, such as Figure 17 As shown, the swing arm 1121 can be integrally formed with the connector body 13. This further improves the connection strength and stability between the swing arm 1121 and the connector body 13, and simplifies the assembly steps of the connector body 13.

[0187] In some embodiments, such as Figures 5 to 7As shown, the second locking structure 112 can also be provided on the adapter 12, and the swing arm 1121 can be fixedly installed on the adapter 12. When the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, the locking part 1124 of the second locking structure 112 provided on the adapter 12 can be inserted into the groove 1111 of the first locking structure 111 provided on the connector body 13 to achieve locking of the connector body 13 and the adapter 12.

[0188] The second connecting structure 1123 can be provided in one of the swing arm 1121 and the adapter 12, and the other of the swing arm 1121 and the adapter 12 can be provided with a second connecting hole 1201. The second connecting structure 1123 is inserted into the second connecting hole 1201 to fix the swing arm 1121 to the adapter 12. This makes the connection between the swing arm 1121 and the adapter 12 more stable and convenient.

[0189] In some embodiments, at least a portion of the locking portion 1124 and the swing arm 1121 may be located within the mounting cavity 1202. This allows the second locking structure 112 to be located within the mounting cavity 1202, and when the first locking structure 111 and the second locking structure 112 are engaged, the adapter 12 can provide protection for both structures, reducing the risk of damage from impacts.

[0190] A second connection hole 1201 may be provided in the inner surface of the mounting cavity 1202 of the adapter 12, so that when at least part of the locking part 1124 and the swing arm 1121 are located in the mounting cavity 1202, it is convenient to insert the second connection structure 1123 into the second connection hole 1201.

[0191] Specifically, the second connecting structure 1123 can be a snap-fit ​​structure. When the second connecting structure 1123 is inserted into the second connecting hole 1201, the second connecting structure 1123 can engage with the second connecting hole 1201, thereby making the connection between the second connecting structure 1123 and the second connecting hole 1201 more stable and convenient. The second connecting hole 1201 can be a blind hole or it can penetrate the inner wall of the adapter 12.

[0192] In other embodiments, such as Figure 13 and Figure 14 As shown, a second connection hole 1201 can also be provided on the outside of the adapter 12. The second connection structure 1123 can be inserted into the second connection hole 1201 from the outside of the adapter 12, thereby connecting the swing arm 1121 and the adapter 12.

[0193] In some embodiments, such as Figure 14 and Figure 16As shown, a second connection hole 1201 can be provided on the outer side of the adapter 12, and a bent section 1125 is directly or indirectly connected to the end of the swing arm 1121 away from the locking part 1124. The bent section 1125 extends from the mounting cavity 1202 to the outer side of the adapter 12, and the bent section 1125 is directly or indirectly connected to the second connection structure 1123. Therefore, the second connection structure 1123 can be inserted into the second connection hole 1201 from the outside of the adapter 12 to connect the swing arm 1121 to the adapter 12. Simultaneously, at least a portion of the locking part 1124 and the swing arm 1121 can be located within the mounting cavity 1202 of the adapter 12.

[0194] Continue to refer to Figure 14 and Figure 16 The bent section 1125 can include a first connecting section 1126 extending along the insertion direction. One end of the first connecting section 1126 along the insertion direction is directly or indirectly connected to the second connecting structure 1123, and the two sections are arranged at an angle. This allows the second connecting hole 1201 of the adapter 12 to maintain a certain distance from the mounting opening 1203 of the mounting cavity 1202, facilitating the formation of the second connecting hole 1201 during the processing of the adapter 12. Simultaneously, it facilitates the bent section extending from inside the mounting cavity 1202 to the outside of the adapter 12 and connecting to the second connecting structure 1123.

[0195] A first positioning groove 1204 can be formed on the outer side of the adapter 12, and the first connecting segment 1126 is located in the first positioning groove 1204. Thus, the first connecting segment 1126 can be positioned by the first positioning groove 1204, which helps to keep the position of the swing arm 1121 relative to the adapter 12 stable.

[0196] In some embodiments, the bent section 1125 may further include a second connecting section 1127 at the end of the first connecting section 1126 away from the second connecting structure 1123, wherein the extension direction and insertion direction of the second connecting section 1127 are set at an angle to the extension direction of the first connecting section 1126. Thus, the swing arm 1121 can be further defined by the second connecting section 1127 engaging with the outer side of the adapter 12.

[0197] A second positioning groove 1205 can be formed on the outer side of the adapter 12, and the second connecting segment 1127 is located in the second positioning groove 1205. Thus, the second connecting segment 1127 can be positioned by the second positioning groove 1205, further improving the matching and positioning effect between the second connecting segment 1127 and the outer side of the adapter 12.

[0198] In other implementations, the swing arm 1121 and the adapter 12 can be integrated as a single unit. This improves the connection stability and strength between the swing arm 1121 and the adapter 12, while also simplifying the assembly process of the adapter 12.

[0199] In some embodiments, such as Figure 18 As shown, the locking assembly 11 may include a plurality of first locking structures 111 and a plurality of second locking structures 112. At least some of the first locking structures 111 and / or at least some of the second locking structures 112 may be distributed on both sides of the adapter 12, and at least another portion of the first locking structures 111 and / or at least another portion of the second locking structures 112 may be distributed on both sides of the connector body 13. Thus, both sides of the adapter 12 and both sides of the connector body 13 can be locked by the locking assembly 11, which helps to improve the connection stability between the adapter 12 and the connector body 13.

[0200] It should be noted that the adapter 12 may have a first locking structure 111 on both sides, and the connector body 13 may have a second locking structure 112 on both sides. Alternatively, the adapter 12 may have a second locking structure 112 on both sides, and the connector body 13 may have a first locking structure 111 on both sides. Alternatively, the adapter 12 may have a first locking structure 111 on one side and a second locking structure 112 on the other side; correspondingly, the connector body 13 may have a second locking structure 112 on one side and a first locking structure 111 on the other side.

[0201] Furthermore, a first locking structure 111 and a second locking structure 112 can be provided on the same side of the adapter 12. Correspondingly, a second locking structure 112 and a first locking structure 111 are provided on the same side of the connector body 13. It is sufficient that the first locking structure 111 provided on the connector body 13 can be engaged and disengaged from the second locking structure 112 provided on the adapter 12, and that the second locking structure 112 provided on the connector body 13 and the first locking structure 111 provided on the adapter 12 can be engaged and disengaged from each other.

[0202] In some embodiments, such as Figure 18 As shown, the connector body 13 can include a plurality of body portions 1311 arranged in parallel, each body portion 1311 being configured to be directly or indirectly connected to the end of at least one optical fiber 2. Each body portion 1311 can be provided with at least one first locking structure 111 and / or at least one second locking structure 112. Thus, when the connector body 13 is connected to the adapter 12, each body portion 1311 of the connector body 13 and the adapter 12 can be locked together by the locking assembly 11, which helps to improve the connection stability and connection strength between the connector body 13 and the adapter 12.

[0203] Specifically, the connector body 13 may include two body portions 1311, each body portion 1311 may be provided with a ferrule 14 configured to be connected to at least one optical fiber 2, each body portion 1311 may be provided with a second locking structure 112 on opposite sides, or each body portion 1311 may be provided with a first locking structure 111 on opposite sides, or each body portion 1311 may be provided with a first locking structure 111 on one side and a second locking structure 112 on the other side.

[0204] In other embodiments, such as Figure 19 As shown, the connector body 13 may include four body portions 1311. Each body portion 1311 is provided with at least one first locking structure 111 and / or at least one second locking structure 112.

[0205] In some embodiments, the push-back structure 17 can be decoupled from the locking assembly 11. Thus, the push-back structure 17 can apply a restoring force to the connector body 13 opposite to the insertion direction, and the locking assembly 11 can provide a locking force to the connector body 13, while the push-back structure 17 and the locking assembly 11 do not interfere with each other.

[0206] The push-back structure 17 and the latching assembly 11 can be set separately, thereby decoupling the push-back structure 17 and the latching assembly 11.

[0207] In some embodiments, such as Figure 3 and Figure 20 As shown, the push-back structure 17 may include an elastic element 171, which is directly or indirectly connected to the connector body 13 and configured to apply an elastic force to the connector body 13 opposite to the insertion direction. Therefore, by applying an elastic force to the connector body 13 opposite to the insertion direction through the elastic element 171, the structure of the push-back structure 17 can be simplified, and the restoring force applied to the connector body 13 can be made more stable.

[0208] The elastic element 171 can be made of at least one of stainless steel, copper alloy, titanium alloy, nickel-based alloy, and spring steel, thereby giving the elastic element 171 high strength and the ability to stably provide elastic force to the connector body 13. The elastic element 171 can include rectangular springs, compression coil springs, disc springs, wave springs, elastic pillars, leaf springs, etc. Alternatively, the elastic element 171 can also be made of rubber, silicone, or other elastic materials.

[0209] In some embodiments, the connector body 13 is provided with a ferrule 14, which is configured to be directly or indirectly connected to the end of the optical fiber 2. The elastic element 171 can be configured to apply an elastic force to the ferrule 14 in the insertion direction. When the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 and the connector body 13 and adapter 12 are connected, the ferrule 14 can abut against the adapter 12 or against the ferrule 14 of another connector body 13, thereby restricting further movement of the ferrule 14 in the insertion direction. At this time, the elastic element 171 applies an elastic force to the ferrule 14 in the insertion direction and an elastic force in the opposite direction to the insertion direction to the connector body 13, enabling the connector body 13 to move in the opposite direction to the insertion direction relative to the ferrule 14 and the adapter 12.

[0210] In some embodiments, the fiber optic connector 10 further includes a base 15 located on the side of the ferrule 14 opposite to the insertion direction, and an elastic member 171 abuts against the side of the base 15 opposite to the insertion direction. Thus, the elastic member 171 indirectly abuts against the ferrule 14 through the base 15, which avoids the problem of the elastic member 171 easily causing wear to the ferrule 14 when the elastic member 171 directly abuts against the ferrule 14.

[0211] In some embodiments, the fiber optic connector 10 further includes at least two positioning rods 16. The ferrule 14 has at least two positioning holes 141 extending through it in the insertion direction. The positioning rods 16 pass through the positioning holes 141 and extend out to both sides of the ferrule 14. The base 15 is directly or indirectly connected to the positioning rods 16. By directly or indirectly connecting the base 15 to the positioning rods 16, the position of the base 15 relative to the ferrule 14 can be made more stable. At the same time, the base 15 can also play a certain positioning role for the two positioning rods 16.

[0212] The fiber optic connector 10 may include a connecting piece 161 located between the ferrule 14 and the base 15. The connecting piece 161 is connected to at least two positioning rods 16, thereby stabilizing the relative positions of the at least two positioning rods 16. One end of the positioning rod 16 passes through the connecting piece 161 and is inserted into the base 15 to improve the connection stability between the positioning rod 16 and the base 15.

[0213] The connecting piece 161 and / or the base 15 are made of at least one of stainless steel, copper alloy, aluminum alloy, and engineering plastic. This allows the connecting piece 161 and the base 15 to have high strength.

[0214] The positioning rod 16 is made of at least one of stainless steel, titanium alloy, cobalt-based alloy, cemented carbide, and ceramic. This gives the positioning rod 16 high strength.

[0215] In some embodiments, the shape of the surface of the base 15 along the insertion direction can be substantially the same as the shape of the surface of the ferrule 14 along the opposite side of the insertion direction, thereby making the fit between the base 15 and the ferrule 14 more stable and improving the connection stability between the base 15 and the ferrule 14.

[0216] In some embodiments, the thickness of the base 15 in the insertion direction can be greater than or equal to 0.2 mm and less than or equal to 2 mm. This allows the base 15 to have high strength while avoiding excessive thickness of the base 15, which would result in an excessively long connector body 13 in the insertion direction.

[0217] The thickness of the base 15 in the insertion direction can be 0.2mm, 0.4mm, 0.6mm, 0.9mm, 1mm, 1.3mm, 1.5mm, 1.8mm, etc., and there is no limitation here.

[0218] In some embodiments, such as Figure 2 As shown, a through hole 151 extending along the insertion direction can be provided in the base 15, which is configured to allow the optical fiber 2 to pass through. In this way, the base 15 can be stably connected directly or indirectly to the ferrule 14, while avoiding the optical fiber 2 and preventing interference between the base 15 and the optical fiber 2.

[0219] In some embodiments, at least two positioning rods 16 can be distributed on both radial sides of the through hole 151. This allows the positioning rods 16 to position the two ferrules 14 while avoiding interference with the optical fiber 2.

[0220] like Figure 2 and Figure 20 As shown, the connector body 13 includes a main housing 131, which has a mounting hole 1314 extending along the insertion direction. The ferrule 14 is slidably mounted in the mounting hole 1314 along the insertion direction. In some embodiments, the connector body 13 further includes a clamping structure 133 disposed on the side of the main housing 131 opposite to the insertion direction. The clamping structure 133 is an integrally formed structure or a separately assembled structure. The clamping structure 133 is configured to clamp the optical fiber 2. By clamping the optical fiber 2 with the clamping structure 133, the optical fiber 2 can be positioned as a whole, preventing the connection stability between the optical fiber 2 and the ferrule 14 from being affected by excessive tension.

[0221] In some embodiments, the elastic element 171 can be located between the ferrule 14 and the clamping structure 133, with one end of the elastic element 171 in the opposite direction of insertion abutting against the clamping structure 133. Thus, the elastic element 171 can apply an elastic force to the connector body 13 in the opposite direction of insertion.

[0222] Specifically, the clamping structure 133 includes two separately arranged clamping members 1331, and a clamping space 1334 is formed between the two clamping members 1331 for the optical fiber 2 to pass through. The end of the elastic member 171 opposite to the insertion direction abuts against the end of the two clamping members 1331 in the insertion direction, thereby abutting the end of the elastic member 171 opposite to the insertion direction against the clamping structure 133.

[0223] The two clamping members 1331 of the clamping structure 133 are inserted into the mounting holes 1314 along the insertion direction. The two clamping members 1331 are respectively engaged with the main housing 131, thereby engaging the clamping structure 133 with the main housing 131. Each of the two clamping members 1331 is provided with a first holding portion 1337, and the main housing 131 has a first slot 1320. The first holding portion 1337 is used to insert into the corresponding first slot 1320, so that the two clamping members 1331 are respectively engaged with the main housing 131.

[0224] like Figure 20 As shown, each of the two clamping members 1331 has a clamping portion 1335 at one end in opposite directions along the insertion direction. The two clamping portions 1335 together form a clamping hole 1336, which is used for the optical fiber 2 to pass through. The two clamping portions 1335 are used to clamp the outer cladding layer that wraps around the optical fiber 2. Thus, the outer cladding layer of the optical fiber 2 can be clamped by the two clamping portions 1335, improving the connection stability between the outer cladding layer of the optical fiber 2 and the connector body 13.

[0225] The connector body 13 also includes a crimping ring 135, which is sleeved on two clamping parts 1335, so that the two clamping parts 1335 can clamp the outer cladding of the optical fiber 2 more stably.

[0226] The crimping ring 135 may be made of at least one of copper alloy, aluminum alloy, low carbon steel and stainless steel, thereby giving the crimping ring 135 high strength.

[0227] In some embodiments, the connector body 13 may further include a heat shrink tube 136 disposed on the side of the crimping ring 135 opposite to the insertion direction. The heat shrink tube 136 is sleeved on the crimping ring 135 and the optical fiber 2, thereby achieving reliable fixation and stress relief of the optical fiber 2 and the connector body 13, ensuring that the optical fiber 2 does not break under dragging and bending conditions.

[0228] The material of the heat shrink tubing 136 may include at least one of polyolefin, polyvinyl chloride, polyvinylidene fluoride, fluororubber, polytetrafluoroethylene, polyester, nylon, polyurethane and silicone rubber.

[0229] In some embodiments, the connector body 13 may further include a rear tail sleeve 137, which is sleeved on one end of two clamping members 1331 in opposite directions along the insertion direction. The two clamping members 1331 are respectively engaged with the rear tail sleeve 137, thereby connecting the clamping structure 133 to the rear tail sleeve 137. The rear tail sleeve 137 is configured to wrap around a portion of the optical fiber 2. Thus, the rear tail sleeve 137 can protect the optical fiber 2, preventing damage caused by excessive bending angle.

[0230] The material of the rear tail sleeve 137 may include at least one of thermoplastic polyolefin elastomer, thermoplastic elastomer, thermoplastic polyurethane elastomer, thermoplastic vulcanized rubber, thermoplastic polyester elastomer, thermoplastic polyamide elastomer and polyolefin elastomer.

[0231] In some embodiments, the two clamping members 1331 may be provided with a second holding part 1338, and a second slot 1372 may be provided on the rear tail sleeve 137. The second holding part 1338 is inserted into the second slot 1372 so that the two clamping members 1331 are respectively engaged with the rear tail sleeve 137.

[0232] In other embodiments, such as Figure 21 As shown, the reverse push structure 17 may include a first magnetic element 172 and a second magnetic element 173. The first magnetic element 172 is mounted within the mounting cavity 1202, and the second magnetic element 173 is mounted on the connector body 13. The first magnetic element 172 and the second magnetic element 173 are configured to generate a repulsive force, thereby applying a force to the connector body 13 opposite to the insertion direction. The repulsive force between the first magnetic element 172 and the second magnetic element 173 can be transmitted to the connector body 13 through the second magnetic element 173, thus applying a restoring force to the connector body 13 opposite to the insertion direction.

[0233] Specifically, the N pole of the first magnetic element 172 can be arranged opposite to the N pole of the second magnetic element 173, or the S pole of the first magnetic element 172 can be arranged opposite to the S pole of the second magnetic element 173, so that a repulsive force can be generated between the first magnetic element 172 and the second magnetic element 173.

[0234] In other embodiments, the fiber optic connector 10 may also include a ferrule 14, which is configured to be directly or indirectly connected to the end of the optical fiber 2. The ferrule 14 is slidably mounted on the connector body 13 along the insertion direction. A first magnetic element 172 is mounted on the ferrule 14, and a second magnetic element 173 is mounted on the connector body 13. The first magnetic element 172 and the second magnetic element 173 are configured to generate a repulsive force to apply a force to the connector body 13 opposite to the insertion direction. Thus, when the ferrule 14 of the connector body 13 directly or indirectly abuts against the ferrule 14 of the adapter 12 or another connector body 13, the repulsive force between the first magnetic element 172 and the second magnetic element 173 can be transmitted to the connector body 13 through the second magnetic element 173, thereby applying a restoring force to the connector body 13 opposite to the insertion direction.

[0235] In other embodiments, such as Figure 22 As shown, the reverse thrust structure 17 may include a first abutment portion 174 disposed within the mounting cavity 1202, and the connector body 13 may include a second abutment portion 1315. At least one of the first abutment portion 174 and the second abutment portion 1315 is elastic. The first abutment portion 174 is configured to abut against the second abutment portion 1315 to apply a force to the connector body 13 opposite to the insertion direction. Thus, when the first abutment portion 174 and the second abutment portion 1315 are engaged, an elastic force can be generated through the elastic deformation of the first abutment portion 174 and / or the second abutment portion 1315, and this elastic force is transmitted to the connector body 13 to achieve the application of a force to the connector body 13 opposite to the insertion direction.

[0236] Specifically, a first abutting slope 1741 is provided on the side of the first abutting portion 174 opposite to the insertion direction, and the first abutting slope 1741 abuts against the second abutting portion 1315. Thus, when the second abutting portion 1315 abuts against the first abutting slope 1741 of the first abutting portion 174, the first abutting portion 174 and / or the second abutting portion 1315 can be effectively elastically deformed, so as to apply a force opposite to the insertion direction to the connector body 13.

[0237] Alternatively, a second abutting slope 1316 can be provided on one side of the second abutting portion 1315 along the insertion direction, and the second abutting slope 1316 abuts against the first abutting portion 174. Thus, when the first abutting portion 174 abuts against the second abutting slope 1316 of the second abutting portion 1315, the first abutting portion 174 and / or the second abutting portion 1315 can be effectively elastically deformed, so as to apply a force opposite to the insertion direction to the connector body 13.

[0238] In some embodiments, such as Figure 24As shown, a pressing surface 1371 can be provided on the side of the connector body 13 opposite to the insertion direction. This pressing surface 1371 is used to receive pressing force, so that the connector body 13 is inserted into the mounting cavity 1202 to a first position under the driving force of the pressing force, or continues to move from the first position to a second position. Thus, it is possible for the user to more conveniently apply driving force to the connector body 13 to drive the connector body 13 to move in the insertion direction.

[0239] In some embodiments, the length of the cross section of the connector body 13 perpendicular to the insertion direction may be greater than or equal to 9.1 mm, so that the positioning between the connector body 13 and the adapter 12 is more accurate after the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12.

[0240] In this case, the length of the cross section of the connector body 13 perpendicular to the insertion direction can be greater than 9.6 mm, so as to increase the number of optical fibers 2 connected to the connector body 13.

[0241] In some embodiments, the length of the cross section of the connector body 13 perpendicular to the insertion direction can be greater than or equal to 9.1 mm and less than or equal to 16.65 mm, so that the connector body 13 can be stably inserted into the mounting cavity 1202 of the adapter 12, and the connector body 13 can connect as many optical fibers 2 as possible.

[0242] The length of the cross section of the connector body 13 perpendicular to the insertion direction can be 9.2mm, 9.4mm, 9.65mm, 9.7mm, 9.75mm, 9.8mm, 9.8mm, 10mm, 12mm, 15mm, etc., and there is no limitation here.

[0243] In some embodiments, the width of the cross section of the connector body 13 perpendicular to the insertion direction may be greater than 3.0 mm, so that the positioning between the connector body 13 and the adapter 12 is more accurate after the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12.

[0244] Specifically, the width of the cross section of the connector body 13 perpendicular to the insertion direction can be greater than or equal to 3.8 mm and less than or equal to 4.9 mm, so that the connector body 13 can be stably inserted into the mounting cavity 1202 of the adapter 12, and the connector body 13 can connect as many optical fibers 2 as possible.

[0245] The width of the cross section of the connector body 13 perpendicular to the insertion direction can be 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.85mm, 3.9mm, 4mm, 4.3mm, 4.5mm, etc., and there is no limitation here.

[0246] In some embodiments, such as Figure 2As shown, the adapter 12 includes a mounting port 1203 for inserting the connector body 13 into the mounting cavity 1202. The mounting port 1203 has a foolproof notch 1212 at its edge. The connector body 13 has a foolproof protrusion 1333 corresponding to the foolproof notch 1212. When the connector body 13 is inserted into the mounting cavity 1202 to a first position, the foolproof protrusion 1333 engages with the foolproof notch 1212. Therefore, when the connector body 13 is inserted into the mounting cavity 1202 from the mounting port 1203 of the adapter 12, the cooperation between the foolproof protrusion 1333 and the foolproof notch 1212 reduces the risk of the connector body 13 and the adapter 12 being installed incorrectly.

[0247] Specifically, such as Figure 1 and Figure 2 As shown, a foolproof notch 1212 is provided on one edge of the mounting port 1203, such as... Figure 24 As shown, no foolproof notch 1212 is provided on the other edge of the mounting port 1203. When the connector body 13 and the adapter 12 are installed backwards, the foolproof protrusion 1333 of the connector body 13 will abut against the edge of the mounting port 1203 where the foolproof notch 1212 is not provided, thereby restricting the connector body 13 from being inserted further and achieving the foolproof effect.

[0248] In other embodiments, a foolproof marking may be provided on the outer side of the connector body 13 and / or the outer side of the adapter 12 to allow the user to confirm whether the connector body 13 and the adapter 12 are installed backwards. Specifically, as shown in 1, Figure 24 and Figure 28 As shown, an arrow can be provided on one side of the connector body 13 to form a foolproof mark, while no arrow is provided on the other side of the connector body 13. The arrow can be located on the foolproof protrusion 1333.

[0249] like Figure 27 As shown, at least one guide rod 122 extending in the insertion direction may be provided in one of the connector body 13 and the adapter 12, and at least one guide hole extending in the insertion direction may be provided in the other of the connector body 13 and the adapter 12. The guide rod 122 is inserted into the guide hole, thereby guiding the connector body 13 when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, and simultaneously positioning the relative position of the connector body 13 and the adapter 12.

[0250] It should be noted that at least one guide rod 122 may be provided in the mounting cavity 1202 of the adapter 12, and at least one guide hole may be provided in the connector body 13. Alternatively, at least one guide rod 122 may be provided in the connector body 13, and at least one guide hole may be provided in the adapter 12.

[0251] The number of guide rods 122 can be multiple to further improve the guiding effect of the guide rods 122 on the connector body 13, as well as the effect of positioning the relative positions of the connector body 13 and the adapter 12.

[0252] Additionally, the radial cross-sectional shape of the guide rod 122 can be adapted to the radial cross-section of the corresponding guide hole. When the guide rod 122 is inserted into the guide hole, it can improve the guiding effect of the guide rod 122 on the connector body 13, as well as the effect of positioning the relative positions of the connector body 13 and the adapter 12.

[0253] In some embodiments, the radial cross-sectional shapes of at least two guide rods 122 may be different. Thus, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 in reverse, the guide rods 122 cannot be inserted into guide holes with different radial cross-sectional shapes, thereby providing a certain degree of foolproof effect through at least two guide rods 122 with different shapes.

[0254] In other embodiments, the radial cross-sectional dimensions of at least two guide rods 122 may be different. Thus, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 in reverse, the guide rods 122 cannot be inserted into guide holes with different radial cross-sectional dimensions, thereby providing a certain degree of foolproofing through at least two guide rods 122 of different dimensions.

[0255] In other embodiments, at least two guide rods 122 may have radially different widths in the width direction of the adapter 12, with the width direction perpendicular to the insertion direction. Therefore, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 in the reverse direction, the guide rods 122 cannot be inserted into guide holes with different radially different widths, thus providing a certain degree of foolproofing through the at least two guide rods 122 with different widths.

[0256] In some embodiments, at least a portion of the guide rod 122 may have a circular or polygonal radial cross-section. When the radial cross-section of the guide rod 122 is polygonal, it is beneficial to improve the torsional resistance of the guide rod 122.

[0257] In some embodiments, at least a portion of the guide rod 122 may have a radial cross-section that is rectangular, hexagonal, elliptical, or semi-circular. This improves the torsional resistance of the guide rod 122. An elliptical shape can be considered a specific type of circle.

[0258] In some embodiments, at least one row of guide rods 122 may be provided in one of the connector body 13 and the adapter 12. In the same row of guide rods 122, the minimum distances from the first guide rod 122 and the last guide rod 122 to the sidewall of the mounting cavity 1202 are different. Therefore, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 in the reverse direction, some guide rods 122 will be misaligned with the guide holes, preventing some guide rods 122 from being inserted into the guide holes, thus providing a certain degree of foolproof protection.

[0259] In some embodiments, one of the connector body 13 and the adapter 12 is provided with at least two rows of guide rods 122, wherein the minimum distance from the first guide rod 122 in one row of guide rods 122 to the sidewall of the mounting cavity 1202 is different from the minimum distance from the first guide rod 122 in at least another row of guide rods 122 to the sidewall of the mounting cavity 1202. Therefore, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 in reverse, some guide rods 122 will be misaligned with the guide holes, preventing some guide rods 122 from being inserted into the guide holes, thus providing a certain degree of foolproof protection.

[0260] Continue to refer to Figure 27 A mounting part 1207 can be provided in the mounting cavity 1202 of the adapter 12, and the guide rod 122 passes through the mounting part 1207, so that the guide rod 122 is stably installed in the mounting cavity 1202 of the adapter 12.

[0261] In other embodiments, the guide rod 122 may also be mounted on the connector body 13, and correspondingly, a guide hole may be provided in the mounting portion 1207 of the adapter 12.

[0262] In some embodiments, such as Figure 27 As shown, the connector body 13 may be provided with multiple ferrules 14, which are configured to be directly or indirectly connected to the end of the optical fiber 2. The mounting cavity 1202 includes channels 1206 configured for inserting the ferrules 14, the number of which is equal to the number of ferrules 14, and they correspond one-to-one. Thus, the ferrules 14 can be positioned through the channels 1206.

[0263] The number of channels 1206 is at least two, so as to facilitate the positioning of multiple ferrules 14 through channels 1206.

[0264] Specifically, the mounting cavity 1202 of the adapter 12 is provided with a plurality of mounting portions 1207, each mounting portion 1207 being connected to at least one guide rod 122. A channel 1206 extends along the insertion direction. The channel 1206 is located between two mounting portions 1207. The number of channels 1206 can be two, three, four or more, and is not limited here.

[0265] like Figure 3 As shown, the fiber optic connector 10 also includes a ferrule 14 configured to be directly or indirectly connected to the end of the fiber optic 2. The connector body 13 includes a main housing 131, which has a mounting hole 1314 extending through the insertion direction. The ferrule 14 is mounted in the mounting hole 1314 along the insertion direction.

[0266] In some embodiments, such as Figure 2 , Figure 55 and Figure 56 As shown, at least one anti-mistake step 142 can be provided on the outer periphery of the ferrule 14, and an anti-mistake groove 1317 adapted to the at least one anti-mistake step 142 can be provided on the inner peripheral surface of the mounting hole 1314. The anti-mistake step 142 is at least partially accommodated in the anti-mistake groove 1317. Thus, through the cooperation of the anti-mistake step 142 and the anti-mistake groove 1317, the risk of the ferrule 14 being installed backwards when it is installed in the connector body 13 can be reduced.

[0267] The inner side of the anti-foolproof groove 1317 can be used to abut against the anti-foolproof step 142 to limit the distance that the ferrule 14 slides relative to the main housing 131 in the insertion direction, thereby positioning the ferrule 14 relative to the connector body 13.

[0268] In some embodiments, the anti-foolproof step 142 can be located at the end of the ferrule 14 opposite to the insertion direction, so as to increase the distance the ferrule 14 moves relative to the connector body 13 in the insertion direction, which is beneficial for the ferrule 14 to extend out of the end of the connector body 13 in the insertion direction and abut against the focusing coupling assembly 18 or another ferrule 14.

[0269] In some embodiments, a plurality of anti-mistake steps 142 may be provided on the outer periphery of the ferrule 14. The plurality of anti-mistake steps 142 are arranged along the circumference of the ferrule 14, thereby further reducing the risk of the ferrule 14 being installed backwards when it is installed in the mounting hole 1314 of the connector body 13.

[0270] Alternatively, the heights of at least two foolproof steps 142 may be different to further reduce the risk of the insert 14 being installed backwards.

[0271] In some embodiments, the difference in the length of the at least two foolproof steps 142 extending in the circumferential direction of the insert 14 may be greater than or equal to 0.2 mm, thereby making the length of the at least two foolproof steps 142 extending in the circumferential direction of the insert 14 significantly different.

[0272] Alternatively, at least two anti-misalignment steps 142 can be distributed on both sides of the insert 14 in the thickness direction. Or, at least two anti-misalignment steps 142 can be distributed on both sides of the insert 14 in the width direction. Thus, when the anti-misalignment steps 142 abut against the inner side of the corresponding anti-misalignment groove 1317, the positioning effect of the insert 14 can be further improved.

[0273] In some embodiments, the lengths and / or heights of at least two anti-misfit steps 142 distributed on opposite sides of the ferrule 14 may be different to improve the positioning and anti-reverse installation effect of the ferrule 14.

[0274] In some embodiments, such as Figure 57 and 35 As shown, the number of anti-misplacement steps 142 can be greater than or equal to three to further improve the positioning and anti-reverse installation effect of the insert 14. Adjacent anti-misplacement steps 142 can be spaced apart; or, as shown... Figure 58 As shown, two adjacent anti-fouling steps 142 can also be set continuously.

[0275] In some embodiments, at least one anti-mistake step 142 may extend in the circumferential direction of the insert 14 by a length greater than or equal to 1 mm and less than or equal to 6 mm, so as to improve the positioning effect of the anti-mistake step 142 on the insert 14 after it mates with the anti-mistake groove 1317.

[0276] In some embodiments, at least one anti-mistake step 142 may extend in the circumferential direction of the insert 14 by a length greater than or equal to 2.8 mm and less than or equal to 3.8 mm, so as to further improve the positioning effect of the anti-mistake step 142 on the insert 14 after it is engaged with the anti-mistake groove 1317, and to give the anti-mistake step 142 higher strength.

[0277] The length of the anti-foolproof step 142 extending circumferentially on the insert 14 can be 1.2mm, 1.5mm, 1.8mm, 2mm, 2.3mm, 2.6mm, 2.8mm, 3mm, 3.3mm, 3.7mm, 4mm, 4.1mm, 4.5mm, 5mm, 5.2mm, 5.7mm, etc., and there is no limitation here.

[0278] In some embodiments, the width of at least one anti-mistake step 142 along the insertion direction or the axial direction of the insert 14 can be greater than or equal to 0.1 mm and less than or equal to 5 mm to improve the structural strength of the anti-mistake step 142. The width of the anti-mistake step 142 along the insertion direction can be 0.2 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.6 mm, 1.8 mm, 2 mm, 2.3 mm, 2.7 mm, 3 mm, 3.1 mm, 3.5 mm, 4 mm, 4.2 mm, 4.7 mm, etc., and is not limited here.

[0279] In some embodiments, the height of at least one anti-mistake step 142 may be greater than or equal to 0.2 mm to improve the strength of the anti-mistake step 142 and the stability of the fit between the anti-mistake step 142 and the anti-mistake groove 1317. The height of the anti-mistake step 142 may be 0.25 mm, 0.27 mm, 0.3 mm, 0.34 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.7 mm, etc., and is not limited here.

[0280] In some embodiments, the maximum thickness of the ferrule 14 may be greater than or equal to 2.2 mm, so that the ferrule 14 can connect as many optical fibers 2 as possible. The maximum thickness of the ferrule 14 may be 2.25 mm, 2.27 mm, 2.3 mm, 2.34 mm, 2.4 mm, 2.5 mm, 2.8 mm, 3 mm, 3.3 mm, 3.7 mm, etc., and is not limited here.

[0281] In some embodiments, the thickness dimension of the area of ​​the ferrule 14 excluding the anti-foolproof step 142 can be less than 2.0 mm, so as to reduce the size of the ferrule 14 and thus reduce the overall size of the connector body 13. The thickness dimension of the area of ​​the ferrule 14 excluding the anti-foolproof step 142 can be 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, etc., and is not limited here.

[0282] In some embodiments, the width of the ferrule 14 can be less than 7.0 mm, thereby reducing the overall size of the connector body 13. The width of the ferrule 14 can be 4 mm, 4.2 mm, 4.5 mm, 5 mm, 6 mm, etc., and is not limited here.

[0283] In some embodiments, the length of the ferrule 14 along the insertion direction or along the axial direction can be less than 15.06 mm, thereby reducing the overall length of the connector body 13. The length of the ferrule 14 along the insertion direction can be 10 mm, 11 mm, 11.5 mm, 12 mm, 15 mm, etc., and is not limited here.

[0284] In some embodiments, such as Figure 27 and Figure 28 As shown, a limiting protrusion 1208 can be provided in the mounting cavity 1202. This limiting protrusion 1208 is configured to abut against the anti-fooling step 142 to limit the distance that the ferrule 14 moves relative to the adapter 12 in the insertion direction. Thus, the limiting protrusion 1208 in the mounting cavity 1202 can limit the ferrule 14, which helps to keep the position of the ferrule 14 relative to the adapter 12 stable.

[0285] Specifically, the mounting cavity 1202 of the adapter 12 includes a mounting part 1207, and the mounting part 1207 is provided with limiting protrusions 1208 on both sides along the insertion direction.

[0286] In some embodiments, such as Figure 56 and Figure 59 As shown, the connector body 13 is provided with a ferrule 14 for connecting to the optical fiber 2. The ferrule 14 is provided with at least one optical fiber hole 143 for the optical fiber 2 to pass through. The optical fiber 2 is inserted into the optical fiber hole 143 and protrudes from one end of the ferrule 14 along the insertion direction, so that the position of the optical fiber 2 relative to the ferrule 14 is kept stable, which facilitates the optical path connection of the end faces of the optical fibers 2 of the two ferrules 14 that are arranged opposite each other.

[0287] The diameter of the fiber optic hole 143 can be greater than or equal to 0.07 mm and less than or equal to 0.15 mm, so that the fiber optic 2 can be accurately positioned after being inserted into the fiber optic hole 143.

[0288] The specific diameter of the fiber optic hole 143 can be 0.08mm, 0.125mm, etc., so that the diameter of the fiber optic hole 143 is basically equal to the diameter of the fiber optic 2.

[0289] In some embodiments, such as Figures 57 to 59 As shown, multiple fiber optic holes 143 can be provided in the ferrule 14, so that the center distance between two adjacent fiber optic holes 143 is greater than or equal to 0.15 mm and less than or equal to 0.5 mm, thereby giving the inner wall of the fiber optic hole 143 high strength and the density of the fiber optic holes 143 high.

[0290] In some embodiments, the center-to-center distance between two adjacent fiber optic holes 143 can be 0.2mm, 0.25mm, 0.3mm, etc.

[0291] In some embodiments, the ferrule 14 may have two positioning holes 141 for the positioning rod 16 to pass through, wherein at least one fiber optic hole 143 is located between the two positioning holes 141, and the center distance between the two positioning holes 141 is 4.60 mm or 5.30 mm. Thus, the positioning rod 16 can be accurately inserted into the positioning holes 141 of the two ferrules 14 to accurately position the two ferrules 14, ensuring precise alignment of the end faces of the optical fibers 2 connected to the two ferrules 14.

[0292] In some embodiments, a countersunk hole 144 may be provided at the end of the ferrule 14 opposite to the insertion direction, corresponding to the position of the fiber optic hole 143. This allows the countersunk hole 144 to guide the end of the fiber optic 2, ensuring accurate insertion into the fiber optic hole 143. The diameter of the countersunk hole 144 may gradually increase in the direction away from the fiber optic hole 143 to improve its guiding effect on the end of the fiber optic 2.

[0293] In some embodiments, a dispensing groove 145 may be formed at one end of the ferrule 14 opposite to the insertion direction, and an optical fiber hole 143 may be formed on the bottom surface of the dispensing groove 145. Thus, when the optical fiber 2 is inserted into the optical fiber hole 143, adhesive can be applied to the dispensing groove 145 to bond and fix the optical fiber 2 and the ferrule 14.

[0294] In this embodiment, the ferrule 14 has multiple fiber optic holes 143 to facilitate connection between the ferrule 14 and the ends of multiple optical fibers 2. For example... Figure 56 As shown, the number of fiber optic holes 143 opened in the ferrule 14 can be 12. In this way, the ends of 12 optical fibers 2 can be inserted into the 12 fiber optic holes 143 of the ferrule 14 one by one, thereby connecting the ferrule 14 with the ends of the 12 optical fibers 2.

[0295] Or, such as Figures 59 to 62 As shown, the number of fiber optic holes 143 opened in the ferrule 14 can be 16. In this way, the ends of 16 optical fibers 2 can be inserted one by one into the 16 fiber optic holes 143 of the ferrule 14, thereby connecting the ferrule 14 with the ends of the 16 optical fibers 2.

[0296] In other embodiments, the number of fiber optic holes 143 opened in the ferrule 14 can be 24, such that... Figure 63 As shown, the ends of 24 optical fibers 2 can be inserted one by one into the 24 optical fiber holes 143 of the ferrule 14, thereby connecting the ferrule 14 with the ends of the 24 optical fibers 2.

[0297] In other embodiments, the number of fiber optic holes 143 opened in the ferrule 14 can be 32, such that... Figure 64 As shown, the ends of 32 optical fibers 2 can be inserted one by one into the 24 optical fiber holes 143 of the ferrule 14, thereby connecting the ferrule 14 with the ends of the 32 optical fibers 2.

[0298] In other embodiments, the number of fiber optic holes 143 opened in the ferrule 14 can be 36, such that... Figure 65 As shown, the ends of the 36 optical fibers 2 can be inserted one by one into the 36 optical fiber holes 143 of the ferrule 14, thereby connecting the ferrule 14 with the ends of the 36 optical fibers 2.

[0299] In other embodiments, the number of fiber optic holes 143 opened in the ferrule 14 can be 48, such that... Figure 66 As shown, the ends of 48 optical fibers 2 can be inserted one by one into the 48 optical fiber holes 143 of the ferrule 14, thereby connecting the ferrule 14 with the ends of the 48 optical fibers 2.

[0300] Of course, the number of fiber optic holes 143 opened in the ferrule 14 can be 64 or other numbers, and there is no limit here.

[0301] In some embodiments, the connector body 13 may be provided with a ferrule 14 configured to connect to the optical fiber 2. The ferrule 14 may be made of at least one of a liquid crystal polymer, polyetherimide, polyetheretherketone, polyethersulfone, and cyclic olefin polymer. Alternatively, the ferrule 14 may be made of polyphenylene sulfide and minerals. Alternatively, the ferrule 14 may be made of polyphenylene sulfide and at least one of fibers, glass fibers, carbon fibers, and mineral fibers. Alternatively, the ferrule 14 may be made of polyamide and fibers, where the fibers include at least one of glass fibers, carbon fibers, and mineral fibers. Alternatively, the ferrule 14 may be made of a liquid crystal polymer and silica particles. This allows the ferrule 14 to have high strength and facilitates control over its processing precision.

[0302] In some embodiments, the fiber optic connector 10 may include two connector bodies 13, which are configured to be inserted into the mounting cavity 1202 from opposite sides of the adapter 12, so that the end face optical paths of the optical fibers 2 directly or indirectly connected to the two connector bodies 13 are connected.

[0303] Among them, such as Figure 1 and Figure 2 As shown, one connector body 13 and adapter 12 can be directly or indirectly connected via locking assembly 11; the other connector body 13 is snapped into adapter 12. That is, one connector body 13 can be a push-in connector body 13, and the other connector body 13 can be a direct mount (DM) connector body 13.

[0304] In some embodiments, at least one snap-fit ​​portion 1319 may be provided on each of the two sides of the other connector body 13 in the width direction, and the snap-fit ​​portion 1319 may be configured to snap-fit ​​with the adapter 12. This makes it easier to connect the other connector body 13 to the adapter 12.

[0305] In some embodiments, at least one latching portion 1319 may be provided on each side of another connector body 13, and the latching portion 1319 is configured to latch with the adapter 12. The number of latching portions 1319 distributed on both sides of the other connector body 13 is different. Therefore, when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12 in the opposite direction, the latching portion 1319 may not latch with the adapter 12, thereby reducing the risk of the connector body 13 and the adapter 12 being installed incorrectly.

[0306] In some embodiments, a snap-fit ​​slot 1213 may be provided in the adapter 12. When the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12, the snap-fit ​​part 1319 is inserted into the snap-fit ​​slot 1213 so that the snap-fit ​​part 1319 snaps into the adapter 12.

[0307] In other embodiments, the connector body 13 may also be fixedly connected to the ferrule 14. Specifically, a ferrule 14 may be fixedly mounted on another connector body 13, and the ferrule 14 may be configured to be directly or indirectly connected to the end of at least one optical fiber 2. When the two connector bodies 13 are connected to the adapter 12, the ferrules 14 of the two adapters 12 can also abut against each other, or abut against the focusing coupling assembly 18.

[0308] In other embodiments, such as Figure 4 and Figure 6 As shown, the two connector bodies 13 can also be directly or indirectly connected to the adapter 12 via the locking assembly 11. That is, both connector bodies 13 are push-in connector bodies 13.

[0309] In some embodiments, such as Figure 3 As shown, the fiber optic connector 10 may also include a ferrule 14 configured to be directly or indirectly connected to the end of the fiber optic 2. The connector body 13 includes a main housing 131, which has a mounting hole 1314 extending through the insertion direction. The ferrule 14 is slidably mounted in the mounting hole 1314 along the insertion direction.

[0310] A protruding abutment 1318 may be provided within the mounting hole 1314, with the insert 14 located on one side of the abutment 1318 along the insertion direction. An elastic element 171 is provided within the mounting hole 1314, one end of which directly or indirectly abuts against the insert 14, and the other end of which directly or indirectly abuts against the abutment 1318. Thus, an elastic force can be applied to the insert 14 through the elastic element 171, allowing the insert 14 to move relative to the connector body 13 along the insertion direction to a position abutting against the focusing coupling assembly 18 or another insert 14.

[0311] It should be noted that the elastic element 171 can serve as a reverse push structure 17. The elastic force applied by the elastic element 171 to the ferrule 14 can be transmitted to the ferrule 14 provided on the opposite side of the connector body 13, thereby pushing the opposite side of the connector body 13 to move in the opposite direction of insertion.

[0312] In some embodiments, such as Figure 18 As shown, the connector body 13 can be provided with multiple ferrules 14, each ferrule 14 being used for direct or indirect connection to the end of at least one optical fiber 2. This increases the number of optical fibers 2 that can be connected to the connector body 13. Alternatively, the connector body 13 can be provided with two ferrules 14, each ferrule 14 being able to connect to the ends of multiple optical fibers 2.

[0313] Or, such as Figure 19As shown, the connector body 13 can be provided with four ferrules 14, each ferrule 14 can connect to the ends of multiple optical fibers 2.

[0314] In some embodiments, such as Figure 8 , Figure 55 and Figure 56 As shown, the connector body 13 is provided with a ferrule 14 configured to be directly or indirectly connected to the end of the optical fiber 2. The end face of the ferrule 14 along the insertion direction is flush with the end face of the optical fiber 2. The end face of the ferrule 14 along the insertion direction can be an Angled Physical Contact (APC) surface to improve return loss.

[0315] Specifically, the angle between the end face of the ferrule 14 and the surface perpendicular to the insertion direction or the axial direction of the ferrule 14 can be greater than or equal to 6° and less than or equal to 12°, thereby giving the end face of the ferrule 14 a polished angle of angular physical contact, so as to effectively suppress end face reflection and improve return loss.

[0316] The angle formed between the end face of the insert 14 and the surface perpendicular to the insertion direction can be 7°, 8°, 9°, 10°, etc., and there is no restriction here.

[0317] Of course, the end face of the ferrule 14 along the insertion direction can also be a spherical surface, a physical contact plane (PC) perpendicular to the insertion direction or the axial direction of the ferrule 14, or an ultraphysical contact plane (UPC) perpendicular to the insertion direction or the axial direction of the ferrule 14. Among them, the ultraphysical contact plane is a highly polished plane, which has lower return loss.

[0318] In some embodiments, the axial direction of the ferrule 14 is parallel to the insertion direction of the connector body.

[0319] In some embodiments, such as Figure 5 and Figure 24 As shown, a limiting step 1209 and a limiting buckle 1210 can be provided on the outer periphery of the adapter 12. The limiting buckle 1210 and the limiting step 1209 are spaced apart along the insertion direction, and the limiting step 1209 and the limiting buckle 1210 are used to abut against the two sides of the panel. Thus, after the adapter 12 passes through the panel, by making the limiting step 1209 and the limiting buckle 1210 abut against the two sides of the panel, the adapter 12 can be stably connected to the panel, which is very convenient to operate.

[0320] The limiting buckle 1210 can be disposed at the junction of adjacent two side surfaces on the outer periphery of the adapter 12; a relief groove 1211 is formed at the junction of adjacent two side surfaces on the outer periphery of the adapter 12 to accommodate the limiting buckle 1210. Thus, the relief groove 1211 can avoid the limiting buckle 1210, so that the limiting buckle 1210 can avoid the panel through elastic deformation. After the elastic buckle passes the panel, the elastic buckle and the limiting step 1209 can abut against the two sides of the panel to stably engage the adapter 12 with the panel.

[0321] In other embodiments, such as Figure 25 and Figure 26 As shown, a retaining member 123 and a limiting step 1209 may be provided on the outer periphery of the adapter 12. The retaining member 123 and the limiting step 1209 are spaced apart along the insertion direction. The retaining member 123 and the limiting buckle 1210 are used to abut against the two sides of the panel.

[0322] The retaining member 123 is engaged with the adapter 12. The retaining member 123 includes a limiting buckle 1210 and a limiting step 1209 for abutting against the two sides of the panel.

[0323] Specifically, the retaining member 123 includes a first retaining segment 1231 and two second retaining segments 1232 connected to both ends of the first retaining segment 1231. The two second retaining segments 1232 abut against the opposite sides of the adapter 12, thereby engaging the retaining member 123 with the adapter 12. Each of the two second retaining segments 1232 is provided with a limiting buckle 1210. The limiting buckle 1210 is integrally formed with the second retaining segment 1232.

[0324] A limiting groove 1214 is also provided on the outer periphery of the adapter 12, extending circumferentially along the adapter 12, and at least a portion of the retaining member 123 is installed in the limiting groove 1214. The retaining member 123 can be made of metal or other elastic non-metallic materials, which are not limited here.

[0325] In some embodiments, at least one of the connector body 13 and adapter 12 may be made of fibers and resins. The resins include at least one selected from polybutylene terephthalate, liquid crystal polymers, polyphenylene sulfide, high-temperature nylon, polyetheretherketone, polyetherimide, polyethersulfone, and polysulfone; the fibers include at least one selected from glass fiber, carbon fiber, and mineral fiber. This allows at least one of the connector body 13 and adapter 12 to meet strength and precision requirements, and also facilitates processing.

[0326] In other embodiments, the material of the adapter 12 may include at least one of zinc alloy, aluminum alloy and liquid crystal polymer, so that the adapter 12 meets the strength and precision requirements and is relatively easy to process.

[0327] In some embodiments, such as Figure 20 As shown, the connector body 13 can have a ferrule 14 at one end along the insertion direction, and the ferrule 14 is configured to be directly or indirectly connected to the optical fiber 2. The optical fiber connector 10 also includes a dust cap 138, which is configured to cover one end of the connector body 13 along the insertion direction and cover the ferrule 14. Thus, when the connector body 13 is not directly or indirectly connected to the adapter 12 or another connector body 13, the dust cap 138 can be placed on one side of the connector body 13 along the insertion direction to protect the ferrule 14 and the optical fiber 2, preventing contamination of the ferrule 14 and the optical fiber 2.

[0328] The dust cap 138 may be made of at least one of the following materials: polycarbonate, acrylonitrile-butadiene-styrene copolymer, low-density polyethylene, high-density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, thermoplastic elastomer, thermoplastic polyurethane elastomer, silicone rubber, and ethylene propylene diene monomer (EPDM) rubber.

[0329] In some embodiments, such as Figures 52 to 54 As shown, the connector body 13 can be a multi-fiber push-pull (MPO) fiber optic connector body. The multi-fiber push-pull fiber optic connector body is provided with a mechanically transferable (MT) ferrule. The mechanically transferable ferrule is provided with multiple fiber holes 143 and at least two positioning holes 141. The multiple fiber holes 143 are located between the at least two positioning holes 141, and the center distance between the at least two positioning holes 141 is 4.60 mm or 5.30 mm.

[0330] In this design, the multiple optical channels 180 of the light-transmitting coupling assembly 18 correspond one-to-one with the multiple fiber optic holes 143 of the mechanically removable ferrule. The light-transmitting coupling assembly 18 is configured to focus the incident light beam through the optical channels 180 to reduce the light spot size, thereby increasing the misalignment tolerance. This compensates for the thermal deformation misalignment caused by the difference in thermal expansion coefficients between the mechanically removable ferrule and the light-transmitting coupling assembly 18, ensuring stable insertion loss in high and low temperature environments.

[0331] In some embodiments, such as Figure 67 and Figure 68 As shown, the fiber optic connector 10 can include two connector bodies 13. One connector body 13 is inserted into the mounting cavity 1202 from one side of the adapter 12 and connected to the adapter 12 via the locking assembly 11. The other connector body 13 is inserted into the mounting cavity 1202 from the other side of the adapter 12 and is fixedly mounted on the adapter 12, such that one of the connector bodies 13 can be plugged into and unplugged from one side of the adapter 12, and the other connector body 13 is fixedly mounted on the other side of the adapter 12.

[0332] The other connector body 13 includes a main housing 131. The main housing 131 has a mounting hole 1314 that extends through the insertion direction. A ferrule 14 is fixedly installed in the mounting hole 1314. The ferrule 14 is configured to be directly or indirectly connected to the end of the optical fiber 2. The ferrule 14 has multiple optical fiber holes 143. The ferrule 14 is a mechanically movable ferrule. The main housing 131 is positioned in cooperation with the adapter 12 through a positioning component to position the ferrule 14 on one side of the mounting cavity 1202 of the adapter 12.

[0333] One of the connector bodies 13 can be plugged in and unplugged from one side of the adapter 12, while another connector body 13 is fixedly installed on the other side of the adapter 12. This eliminates the need to unlock one of the connector bodies 13 from the side of the adapter 12, thus resolving the contradiction between the fixed direct-mount side and the lack of side operation space on the pluggable side. This achieves a hybrid connection configuration where one side of the fiber optic connector 10 is directly mounted and the other side is pluggable, which is beneficial for high-density hybrid wiring scenarios.

[0334] Among them, such as Figure 67 As shown, the mounting hole 1314 of the main housing 131 is provided with an anti-disengagement buckle 1321 and a stop protrusion 1322. The insert 14 includes a mounting step 146. After the insert 14 is installed in the mounting hole 1314, the anti-disengagement buckle 1321 and the stop protrusion 1322 are clamped on both sides of the mounting step 146, thus fixing the insert 14 to the main housing 131.

[0335] In some embodiments, such as Figure 67 and Figure 69 As shown, one connector body 13 can be inserted into the mounting cavity 1202 from one side of the adapter 12 and connected to the adapter 12 via the locking assembly 11, while the other connector body 13 is inserted into the mounting cavity 1202 from the other side of the adapter 12 and fixedly mounted on the adapter 12, so that one connector body 13 can be inserted and removed from one side of the adapter 12, and the other connector body 13 is fixedly mounted on the other side of the adapter 12.

[0336] The other connector body 13 includes a main housing 131 with a mounting hole 1314 extending through the insertion direction. A ferrule 14 is fixedly installed in the mounting hole 1314. The ferrule 14 is configured to be directly or indirectly connected to the end of the optical fiber 2. The ferrule 14 has multiple fiber holes 143 and at least two positioning holes 141. The multiple fiber holes 143 are located between the at least two positioning holes 141, and the center distance between the at least two positioning holes 141 is 4.60 mm or 5.30 mm. The ferrule 14 is a mechanically movable ferrule. The main housing 131 is positioned by cooperating with the adapter 12 through a positioning component to position the ferrule 14 on one side of the mounting cavity 1202 of the adapter 12. A focusing coupling component 18 is located in the mounting cavity 1202, and the multiple optical channels 180 of the focusing coupling component 18 correspond one-to-one with the multiple fiber holes 141 of the ferrule 14.

[0337] This embodiment achieves spatial optical coupling (non-direct physical contact) through the focusing coupling component 18, and focuses the light beam through the optical channel 180 to reduce the light spot, increase the misalignment tolerance, and compensate for thermal deformation misalignment caused by differences in thermal expansion coefficients, thus keeping the insertion loss stable in high and low temperature environments. Simultaneously, the mechanically movable ferrule is stably fixed to one side of the adapter 12 through a direct-mount structure, and the connector body 13 is press-locked and press-decoupled through the locking component 11, eliminating the need for unlocking from the side. This constitutes a multi-core press-locked focusing optical coupling connector 10 with a mechanically movable ferrule directly fixed on one side, focusing optical coupling in the middle, and a press-locked / decoupled connector that can be plugged in and removed on the other side, enabling optical signal conduction of multi-core optical fibers at both ends.

[0338] This application embodiment also proposes a connector body 13, which is configured to be directly or indirectly connected to the end of at least one optical fiber 2. The connector body 13 is configured to be inserted into the mounting cavity 1202 of the adapter 12 along the insertion direction, so that the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 is optically connected to the end face of at least another optical fiber 2 in the mounting cavity 1202. The connector body 13 is configured to provide locking force through the locking assembly 11. The locking assembly 11 includes a first locking structure 111 and a second locking structure 112. The connector body 13 is provided with at least one of the first locking structure 111 and the second locking structure 112. The adapter 12 is provided with at least one of the first locking structure 111 and the second locking structure 112. The first locking structure 111 and the second locking structure 112 are configured to engage and disengage with each other. The connector body 13 is also provided with a reverse push structure 17, which is configured to apply a reset force opposite to the insertion direction to the connector body 13 to drive the connector body 13 out. When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 and the second locking structure 112 engage with each other to lock the connector body 13 and the adapter 12; when the connector body 13 continues to move from the first position to the second position along the insertion direction, the first locking structure 111 and the second locking structure 112 disengage from each other, and the reverse push structure 17 drives the connector body 13 to exit in the reverse direction along the insertion direction.

[0339] The structures of the connector body 13, the locking assembly 11, the push-back structure 17, and the adapter 12 can be referred to the above embodiments.

[0340] In some embodiments, the locking assembly 11 includes a plurality of first locking structures 111 and a plurality of second locking structures 112, at least one first locking structure 111 and at least one second locking structure 112 are disposed on the adapter 12, and at least one first locking structure 111 and at least one second locking structure 112 are disposed on the connector body 13. When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 located in the adapter 12 and the second locking structure 112 located in the connector body 13 engage with each other, and the second locking structure 112 located in the adapter 12 and the first locking structure 111 located in the connector body 13 engage to lock the connector body 13 and the adapter 12. When the connector body 13 moves from the first position to the second position along the insertion direction, the first locking structure 111 located on the adapter 12 and the second locking structure 112 located on the connector body 13 disengage from each other, and the second locking structure 112 located on the adapter 12 and the first locking structure 111 located on the connector body 13 are unlocked to unlock the connector body 13 and the adapter 12.

[0341] In some embodiments, the first locking structure 111 is provided with a guide structure, the guide structure including a first guide portion and a second guide portion, and the second locking structure 112 is provided with a locking portion, the locking portion being configured to lock and unlock with the first locking structure 111; during the process of the connector body 13 being inserted into the mounting cavity 1202 to a first position along the insertion direction, the first guide portion guides the locking portion from a position separated from the first locking structure 111 to a position locked with the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are mutually engaged; during the process of the connector body 13 continuing to move from the first position to the second position along the insertion direction, the second guide portion guides the locking portion from a position locked with the first locking structure 111 to a position unlocked from the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are mutually disengaged; and / or. The second locking structure 112 is elastic and has a locking part, which is configured to lock and unlock with the first locking structure 111. During the process of the connector body 13 being inserted into the mounting cavity to the first position along the insertion direction, the locking part uses the elastic deformation of the second locking structure 112 to move from the position separated from the first locking structure 111 to the position locked with the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are engaged with each other. During the process of the connector body 13 continuing to move from the first position to the second position along the insertion direction, the locking part uses the elastic deformation of the second locking structure 112 to move from the position locked with the first locking structure 111 to the position unlocked from the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are disengaged from each other.

[0342] In some embodiments, the first latching structure 111 is provided with a slide groove 1111, the slide groove 1111 includes a sliding section 1112, a locking section 1114 and a sliding section 1116, the sliding section 1112 and the sliding section 1116 are arranged side by side and extend along the insertion direction respectively, the locking section 1114 is connected between the sliding section 1112 and the sliding section 1116, and the second latching structure 112 includes a locking part 1124; During the process of inserting the connector body 13 into the mounting cavity 1202 to the first position, the locking part 1124 slides along the sliding section 1112 to the locking section 1114. The inner side of the locking section 1114 is configured to abut against the locking part 1124 so that the first locking structure 111 and the second locking structure 112 are engaged with each other. When the connector body 13 moves from the first position to the second position along the insertion direction, the locking part 1124 slides from the locking section 1114 to the sliding section 1116, so that the first locking structure 111 and the second locking structure 112 disengage from each other.

[0343] In some embodiments, the push-back structure 17 and the latch assembly 11 are separate components.

[0344] In some embodiments, the connector body 13 is provided with a focusing coupling component 18 having an optical channel 180. One side surface of the focusing coupling component 18 is disposed opposite to the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13, and the other side surface of the focusing coupling component 18 is disposed opposite to the end face of at least another optical fiber 2 in the mounting cavity 1202, so that the end faces of the optical fibers 2 on both sides of the focusing coupling component 18 are optically connected through the optical channel 180. The focusing coupling component 18 is configured to focus the light beam transmitted between the end faces of the two optical fibers 2 through the optical channel 180.

[0345] In some embodiments, the focusing coupling assembly 18 includes a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183 stacked together, wherein the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51, and the refractive index of the first light-transmitting refractive element 181 is less than or equal to 1.67; and / or, The focusing coupling assembly 18 has at least two optical channels 180; and / or, Spatial optical coupling is achieved between the two optical fiber end faces through a focusing coupling component 18, rather than direct physical contact coupling.

[0346] In some embodiments, the connector body 13 includes a main housing 131, the main housing 131 having a mounting hole 1314 extending through in the insertion direction; a ferrule 14 is installed in the mounting hole 1314 along the insertion direction, the ferrule 14 being configured to connect to the end of the optical fiber 2. The outer periphery of the insert 14 is provided with at least one anti-mistake step 142, and the inner periphery of the mounting hole 1314 is provided with an anti-mistake groove 1317 adapted to the at least one anti-mistake step 142, and the anti-mistake step 142 is at least partially accommodated in the anti-mistake groove 1317.

[0347] In some embodiments, the outer periphery of the insert 14 is further provided with a plurality of anti-foolproof steps 142, which are arranged along the circumference of the insert 14. At least two foolproof steps 142 have different heights; and / or, At least two foolproof steps 142 have different lengths extending circumferentially from the insert 14; and / or, At least two foolproof steps 142 are distributed on opposite sides of the insert 14.

[0348] This application embodiment also provides an adapter 12, which includes a mounting cavity 1202. The mounting cavity 1202 is configured to allow at least one connector body 13 to be inserted along the insertion direction, so that the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13 is optically connected to the end face of at least another optical fiber 2 in the mounting cavity 1202. The adapter 12 is configured to provide locking force to the connector body 13 via the locking assembly 11. The locking assembly 11 includes a first locking structure 111 and a second locking structure 112. The connector body 13 is provided with at least one of the first locking structure 111 and the second locking structure 112. The adapter 12 is provided with at least one of the first locking structure 111 and the second locking structure 112. The first locking structure 111 and the second locking structure 112 are configured to engage and disengage with each other. The adapter 12 is also configured to apply a resetting force opposite to the insertion direction to the connector body 13 via the push-back structure 17 to drive the connector body 13 out. When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 and the second locking structure 112 engage with each other to lock the connector body 13 and the adapter 12; when the connector body 13 continues to move from the first position to the second position along the insertion direction, the first locking structure 111 and the second locking structure 112 disengage from each other, and the reverse push structure 17 drives the connector body 13 to exit in the reverse direction along the insertion direction.

[0349] The structures of the adapter 12, connector body 13, push-back structure 17 and locking assembly 11 can refer to the above embodiments.

[0350] In some embodiments, the locking assembly 11 includes a plurality of first locking structures 111 and a plurality of second locking structures 112, at least one first locking structure 111 and at least one second locking structure 112 are disposed on the adapter 12, and at least one first locking structure 111 and at least one second locking structure 112 are disposed on the connector body 13. When the connector body 13 is inserted into the mounting cavity 1202 to the first position, the first locking structure 111 located in the adapter 12 and the second locking structure 112 located in the connector body 13 engage with each other, and the second locking structure 112 located in the adapter 12 and the first locking structure 111 located in the connector body 13 engage to lock the connector body 13 and the adapter 12. When the connector body 13 moves from the first position to the second position along the insertion direction, the first locking structure 111 located on the adapter 12 and the second locking structure 112 located on the connector body 13 disengage from each other, and the second locking structure 112 located on the adapter 12 and the first locking structure 111 located on the connector body 13 are unlocked to unlock the connector body 13 and the adapter 12.

[0351] In some embodiments, the first locking structure 111 is provided with a guide structure, the guide structure including a first guide portion and a second guide portion, and the second locking structure 112 is provided with a locking portion, the locking portion being configured to lock and unlock with the first locking structure 111; during the process of the connector body 13 being inserted into the mounting cavity 1202 to a first position along the insertion direction, the first guide portion guides the locking portion from a position separated from the first locking structure 111 to a position locked with the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are mutually engaged; during the process of the connector body 13 continuing to move from the first position to the second position along the insertion direction, the second guide portion guides the locking portion from a position locked with the first locking structure 111 to a position unlocked from the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are mutually disengaged; and / or. The second locking structure 112 is elastic and has a locking part, which is configured to lock and unlock with the first locking structure 111. During the process of the connector body 13 being inserted into the mounting cavity 1202 to the first position along the insertion direction, the locking part uses the elastic deformation of the second locking structure 112 to move from the position separated from the first locking structure 111 to the position locked with the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are engaged with each other. During the process of the connector body 13 continuing to move from the first position to the second position along the insertion direction, the locking part uses the elastic deformation of the second locking structure 112 to move from the position locked with the first locking structure 111 to the position unlocked from the first locking structure 111, so that the first locking structure 111 and the second locking structure 112 are disengaged from each other.

[0352] In some embodiments, the first latching structure 111 is provided with a slide groove 1111, the slide groove 1111 includes a sliding section 1112, a locking section 1114 and a sliding section 1116, the sliding section 1112 and the sliding section 1116 are arranged side by side and extend along the insertion direction respectively, the locking section 1114 is connected between the sliding section 1112 and the sliding section 1116, and the second latching structure 112 includes a locking part 1124; During the process of inserting the connector body 13 into the mounting cavity 1202 to the first position, the locking part 1124 slides along the sliding section 1112 to the locking section 1114. The inner side of the locking section 1114 is configured to abut against the locking part 1124 so that the first locking structure 111 and the second locking structure 112 are engaged with each other. When the connector body 13 moves from the first position to the second position along the insertion direction, the locking part 1124 slides from the locking section 1114 to the sliding section 1116, so that the first locking structure 111 and the second locking structure 112 disengage from each other.

[0353] In some embodiments, the mounting cavity 1202 is further provided with a focusing coupling component 18, the two side surfaces of the focusing coupling component 18 are configured to be opposite to the end faces of the two side optical fibers 2, so that the end faces of the two side optical fibers 2 are connected through the optical channel 180; the focusing coupling component 18 is configured to focus the light beam transmitted between the end faces of the two side optical fibers 2 through the optical channel 180.

[0354] In some embodiments, the focusing coupling assembly 18 includes a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183 stacked together, wherein the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51, and the refractive index of the first light-transmitting refractive element 181 is less than or equal to 1.67; and / or, The focusing coupling assembly 18 has at least two optical channels 180; and / or, Spatial optical coupling is achieved between the two optical fiber end faces through a focusing coupling component 18, rather than direct physical contact coupling.

[0355] In some embodiments, the mounting cavity 1202 is provided with at least one guide rod 122 extending in the insertion direction, and the guide rod 122 is configured as a guide hole for inserting into the connector body 13.

[0356] In some embodiments, the number of guide rods 122 is multiple; At least two guide rods 122 have radial cross-sectional shapes that are different; and / or, At least two guide rods 122 have different radial cross-sectional dimensions; and / or, In the width direction of adapter 12, the radial cross-sections of at least two guide rods 122 have different widths, and the width direction is perpendicular to the insertion direction.

[0357] In some embodiments, the mounting cavity 1202 is provided with at least one row of guide rods 122, wherein the minimum distances from the first guide rod 122 and the last guide rod 122 to the sidewall of the mounting cavity 1202 are different; and / or, The mounting cavity 1202 is provided with at least two rows of guide rods 122, wherein the minimum distance from the first guide rod 122 in one row to the side wall of the mounting cavity 1202 is different from the minimum distance from the first guide rod 122 in at least another row to the side wall of the mounting cavity 1202.

[0358] This application embodiment also provides a locking assembly 11 for an optical fiber connector 10. The locking assembly 11 includes a first locking structure 111 and a second locking structure 112. The connector body 13 of the optical fiber connector 10 is provided with at least one of the first locking structure 111 and the second locking structure 112. The adapter 12 of the optical fiber connector 10 is provided with at least one of the first locking structure 111 and the second locking structure 112. The first locking structure 111 and the second locking structure 112 are configured to engage and disengage from each other. The first locking structure 111 is provided with a slide groove 1111, which includes a sliding section 1112, a locking section 1114 and a sliding section 1116. The sliding section 1112 and the sliding section 1116 are arranged side by side and extend along the insertion direction when the connector body 13 is inserted into the mounting cavity 1202 of the adapter 12. The locking section 1114 is connected between the sliding section 1112 and the sliding section 1116. The second locking structure 112 includes a locking part 1124. During the process of inserting the connector body 13 into the mounting cavity 1202 to the first position, the locking part 1124 slides along the sliding section 1112 to the locking section 1114. The inner side of the locking section 1114 is configured to abut against the locking part 1124 so that the first locking structure 111 and the second locking structure 112 are engaged with each other. When the connector body 13 moves from the first position to the second position along the insertion direction, the locking part 1124 slides from the locking section 1114 to the sliding section 1116, so that the first locking structure 111 and the second locking structure 112 disengage from each other.

[0359] The structure of the locking assembly 11 can be referred to in the above embodiments, and will not be repeated here.

[0360] This application embodiment also provides a connector body 13. The connector body 13 is configured to be directly or indirectly connected to at least one optical fiber 2; wherein, the connector body 13 is provided with a focusing coupling component 18, the focusing coupling component 18 has at least two optical channels 180, one side surface of the focusing coupling component 18 is configured to be opposite to the end face of at least one optical fiber 2 directly or indirectly connected to the connector body 13, and the other side surface of the focusing coupling component 18 is configured to be opposite to the end face of at least another optical fiber 2, so that the end faces of the optical fibers 2 on both sides of the focusing coupling component 18 are connected through the optical channels 180 of the focusing coupling component 18; The focusing coupling assembly 18 includes a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183 stacked together. The refractive index of the first light-transmitting refractive element 181 is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183. The two optical fiber 2 end faces are spatially optically coupled through the focusing coupling assembly 18, rather than directly physically contacted. The focusing coupling assembly 18 is configured to focus the light beam transmitted between the end faces of the two optical fibers 2 through the optical channel 180.

[0361] In some embodiments, the refractive index of the first light-transmitting refractive element 181 is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element 183 is located between two first light-transmitting refractive elements 181. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abuts against the end face of the corresponding optical fiber 2 or has an air gap. Alternatively, at least one first light-transmitting refractive element 181 is located between two second light-transmitting refractive elements 183. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abuts against the end face of the corresponding optical fiber 2 or has an air gap. Alternatively, the focusing coupling assembly 18 includes one first light-transmitting refractive element 181 and one second light-transmitting refractive element 183. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abuts against the end face of the corresponding optical fiber 2 or has an air gap. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abuts against the end face of the corresponding optical fiber 2 or has an air gap. And / or, The number of first light-transmitting refractive elements 181 is multiple, and at least two first light-transmitting refractive elements 181 have different or the same refractive index; and / or, The number of second light-transmitting refractive elements 183 is multiple, and at least two second light-transmitting refractive elements 183 have different or the same refractive index; and / or, The first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 are integrally disposed; and / or, The first light-transmitting and refractive element 181 is made of an elastic material; and / or, The refractive index of at least one second light-transmitting refractive element 183 is greater than the refractive index of the first light-transmitting refractive element 181, or the refractive index of at least one second light-transmitting refractive element 183 is equal to the refractive index of the first light-transmitting refractive element 181, or the refractive index of at least one second light-transmitting refractive element 183 is less than the refractive index of the first light-transmitting refractive element 181.

[0362] In some embodiments, the second light-transmitting refractive element 183 includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element 183 is provided with an anti-reflection film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element 181 and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 is configured to focus the incident light beam; and / or, Concentrating coupling assembly 18 does not include refractive index matching fluid; and / or, At least one first light-transmitting refractive element 181 includes a concave lens 190 on the side opposite to the second light-transmitting refractive element 183, the concave lens 190 being positioned corresponding to the light channel 180; and / or, Two second light-transmitting refractive elements 183 are located between two first light-transmitting refractive elements 181, and an air gap exists between the two second light-transmitting refractive elements 183; or, two second light-transmitting refractive elements 183 are located between two first light-transmitting refractive elements 181, and concave lenses 190 are formed by recessing the opposing sides of the two second light-transmitting refractive elements 183 at the position corresponding to the optical channel 180; or, two first light-transmitting refractive elements 181 are located between two second light-transmitting refractive elements 183, and an air gap exists between the two first light-transmitting refractive elements 181; or, two first light-transmitting refractive elements 181 are located between two second light-transmitting refractive elements 183, and concave lenses 190 are formed by recessing the opposing sides of the two first light-transmitting refractive elements 181 at the position corresponding to the optical channel 180; and / or, When the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187; or, when the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187; and / or, The refractive index of the first light-transmitting refractive element 181 is less than that of the second light-transmitting refractive element 183, and a convex lens 187 protrudes from the second light-transmitting refractive element 183 at a position corresponding to the optical channel 180 on the side of the second light-transmitting refractive element 183 facing the first light-transmitting refractive element 181; or, the refractive index of the first light-transmitting refractive element 181 is greater than that of the second light-transmitting refractive element 183, and a convex lens 187 protrudes from the first light-transmitting refractive element 181 at a position corresponding to the optical channel 180 on the side of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183; and / or, The second light-transmitting refractive element 183 has auxiliary mounting structures 184 on both sides. The auxiliary mounting structures 184 are configured to mount the first light-transmitting refractive element 181. Each auxiliary mounting structure 184 includes at least one mounting protrusion inserted into the first light-transmitting refractive element 181. Alternatively, the auxiliary mounting structure 184 includes at least one mounting groove 185, in which at least a portion of the first light-transmitting refractive element 181 is mounted. And / or, The light-concentrating coupling component 18 also includes a light-transmitting refractive layer disposed between the second light-transmitting refractive element 183 and the first light-transmitting refractive element 181; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

[0363] In some embodiments, the connector body 13 is provided with a ferrule 14 configured to be directly or indirectly connected to the optical fiber 2; the ferrule 14 includes an abutment surface, the abutment surface is flush with the end face of the optical fiber 2 directly or indirectly connected to the ferrule 14, and the abutment surface abuts against one side surface of the focusing coupling assembly 18.

[0364] In some embodiments, the fiber optic connector 10 includes a positioning rod 16, and the ferrule 14 has a through positioning hole 141. The positioning rod 16 is configured to insert into the positioning hole 141 of two ferrules 14 to position the two ferrules 14. The focusing coupling assembly 18 has a through hole 186 through which the positioning rod 16 passes.

[0365] This application embodiment also provides an adapter 12. The adapter 12 includes a mounting cavity 1202, and the adapter 12 is configured to allow two connector bodies 13 to be inserted into the mounting cavity 1202 from opposite sides of the adapter 12; wherein, the adapter 12 is provided with a focusing coupling assembly 18, the focusing coupling assembly 18 has at least two optical channels 180, and the two side surfaces of the focusing coupling assembly 18 are configured to be opposite to the end faces of the optical fibers 2 directly or indirectly connected to the two connector bodies 13, so that the end faces of the optical fibers 2 on both sides of the focusing coupling assembly 18 are optically connected through the optical channels 180 of the focusing coupling assembly 18; The focusing coupling assembly 18 includes a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183 stacked together. The refractive index of the first light-transmitting refractive element 181 is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183. The two optical fiber 2 end faces are spatially optically coupled through the focusing coupling assembly 18, rather than directly physically contacted. The focusing coupling assembly 18 is configured to focus the light beam transmitted between the end faces of the two optical fibers 2 through the optical channel 180.

[0366] In some embodiments, the refractive index of the first light-transmitting refractive element 181 is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element 183 is located between two first light-transmitting refractive elements 181. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abuts against the end face of the corresponding optical fiber 2 or has an air gap. Alternatively, at least one first light-transmitting refractive element 181 is located between two second light-transmitting refractive elements 183. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abuts against the end face of the corresponding optical fiber 2 or has an air gap. Alternatively, the focusing coupling assembly 18 includes one first light-transmitting refractive element 181 and one second light-transmitting refractive element 183. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abuts against the end face of the corresponding optical fiber 2 or has an air gap. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abuts against the end face of the corresponding optical fiber 2 or has an air gap. And / or, The number of first light-transmitting refractive elements 181 is multiple, and at least two first light-transmitting refractive elements 181 have different or the same refractive index; and / or, The number of second light-transmitting refractive elements 183 is multiple, and at least two second light-transmitting refractive elements 183 have different or the same refractive index; and / or, The first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 are integrally disposed; and / or, The first light-transmitting and refractive element 181 is made of an elastic material; and / or, The refractive index of at least one second light-transmitting refractive element 183 is greater than the refractive index of the first light-transmitting refractive element 181, or the refractive index of at least one second light-transmitting refractive element 183 is equal to the refractive index of the first light-transmitting refractive element 181, or the refractive index of at least one second light-transmitting refractive element 183 is less than the refractive index of the first light-transmitting refractive element 181.

[0367] In some embodiments, the second light-transmitting refractive element 183 includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element 183 is provided with an anti-reflection film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element 181 and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 is configured to focus the incident light beam; and / or, Concentrating coupling assembly 18 does not include refractive index matching fluid; and / or, At least one first light-transmitting refractive element 181 includes a concave lens 190 on the side opposite to the second light-transmitting refractive element 183, the concave lens 190 being positioned corresponding to the light channel 180; and / or, Two second light-transmitting refractive elements 183 are located between two first light-transmitting refractive elements 181, and an air gap exists between the two second light-transmitting refractive elements 183; or, two second light-transmitting refractive elements 183 are located between two first light-transmitting refractive elements 181, and concave lenses 190 are formed by recessing the opposing sides of the two second light-transmitting refractive elements 183 at the position corresponding to the optical channel 180; or, two first light-transmitting refractive elements 181 are located between two second light-transmitting refractive elements 183, and an air gap exists between the two first light-transmitting refractive elements 181; or, two first light-transmitting refractive elements 181 are located between two second light-transmitting refractive elements 183, and concave lenses 190 are formed by recessing the opposing sides of the two first light-transmitting refractive elements 181 at the position corresponding to the optical channel 180; and / or, When the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187; or, when the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187; and / or, The refractive index of the first light-transmitting refractive element 181 is less than that of the second light-transmitting refractive element 183, and a convex lens 187 protrudes from the second light-transmitting refractive element 183 at a position corresponding to the optical channel 180 on the side of the second light-transmitting refractive element 183 facing the first light-transmitting refractive element 181; or, the refractive index of the first light-transmitting refractive element 181 is greater than that of the second light-transmitting refractive element 183, and a convex lens 187 protrudes from the first light-transmitting refractive element 181 at a position corresponding to the optical channel 180 on the side of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183; and / or, The second light-transmitting refractive element 183 has auxiliary mounting structures 184 on both sides. The auxiliary mounting structures 184 are configured to mount the first light-transmitting refractive element 181. Each auxiliary mounting structure 184 includes at least one mounting protrusion inserted into the first light-transmitting refractive element 181. Alternatively, the auxiliary mounting structure 184 includes at least one mounting groove 185, in which at least a portion of the first light-transmitting refractive element 181 is mounted. And / or, The light-concentrating coupling component 18 also includes a light-transmitting refractive layer disposed between the second light-transmitting refractive element 183 and the first light-transmitting refractive element 181; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

[0368] This application embodiment also provides a focusing coupling component 18, which is used for the optical fiber connector 10 of any one of claims 1 to 19; or for the connector body 13 of any one of claims 20 to 24; or for the adapter 12 of any one of claims 25 to 27. The focusing coupling component 18 has at least two optical channels 180. The two side surfaces of the focusing coupling component 18 are configured to be opposite to the end faces of the optical fibers 2 on both sides of the focusing coupling component 18, so that the end faces of the optical fibers 2 on both sides of the focusing coupling component 18 are connected through the optical channels 180 of the focusing coupling component 18. The focusing coupling assembly 18 includes a first light-transmitting refractive element 181 and a second light-transmitting refractive element 183 stacked together. The refractive index of the first light-transmitting refractive element 181 is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51. There is no air gap between the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183. The two optical fiber 2 end faces are spatially optically coupled through the focusing coupling assembly 18, rather than directly physically contacted. The focusing coupling assembly 18 is configured to focus the light beam transmitted between the end faces of the two optical fibers 2 through the optical channel 180.

[0369] In some embodiments, the refractive index of the first light-transmitting refractive element 181 is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element 183 is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element 183 is located between two first light-transmitting refractive elements 181. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abuts against the end face of the corresponding optical fiber 2 or has an air gap. Alternatively, at least one first light-transmitting refractive element 181 is located between two second light-transmitting refractive elements 183. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abuts against the end face of the corresponding optical fiber 2 or has an air gap. Alternatively, the focusing coupling assembly 18 includes one first light-transmitting refractive element 181 and one second light-transmitting refractive element 183. The side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 abuts against the end face of the corresponding optical fiber 2 or has an air gap. The side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 abuts against the end face of the corresponding optical fiber 2 or has an air gap. And / or, The number of first light-transmitting refractive elements 181 is multiple, and at least two first light-transmitting refractive elements 181 have different or the same refractive index; and / or, The number of second light-transmitting refractive elements 183 is multiple, and at least two second light-transmitting refractive elements 183 have different or the same refractive index; and / or, The first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 are integrally disposed; and / or, The first light-transmitting and refractive element 181 is made of an elastic material; and / or, The refractive index of at least one second light-transmitting refractive element 183 is greater than the refractive index of the first light-transmitting refractive element 181, or the refractive index of at least one second light-transmitting refractive element 183 is equal to the refractive index of the first light-transmitting refractive element 181, or the refractive index of at least one second light-transmitting refractive element 183 is less than the refractive index of the first light-transmitting refractive element 181.

[0370] In some embodiments, the second light-transmitting refractive element 183 includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element 183 is provided with an anti-reflection film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element 181 and the refractive index of the second light-transmitting refractive element 183 is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element 181 and the second light-transmitting refractive element 183 is configured to focus the incident light beam; and / or, Concentrating coupling assembly 18 does not include refractive index matching fluid; and / or, At least one first light-transmitting refractive element 181 includes a concave lens 190 on the side opposite to the second light-transmitting refractive element 183, the concave lens 190 being positioned corresponding to the light channel 180; and / or, Two second light-transmitting refractive elements 183 are located between two first light-transmitting refractive elements 181, and an air gap exists between the two second light-transmitting refractive elements 183; or, two second light-transmitting refractive elements 183 are located between two first light-transmitting refractive elements 181, and concave lenses 190 are formed by recessing the opposing sides of the two second light-transmitting refractive elements 183 at the position corresponding to the optical channel 180; or, two first light-transmitting refractive elements 181 are located between two second light-transmitting refractive elements 183, and an air gap exists between the two first light-transmitting refractive elements 181; or, two first light-transmitting refractive elements 181 are located between two second light-transmitting refractive elements 183, and concave lenses 190 are formed by recessing the opposing sides of the two first light-transmitting refractive elements 181 at the position corresponding to the optical channel 180; and / or, When the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the first light-transmitting refractive element 181 facing away from the second light-transmitting refractive element 183 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187; or, when the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 has an air gap with the end face of the corresponding optical fiber 2, the position of the side of the second light-transmitting refractive element 183 facing away from the first light-transmitting refractive element 181 corresponding to the position of the optical fiber 2 is a plane or is provided with a convex lens 187; and / or, The refractive index of the first light-transmitting refractive element 181 is less than that of the second light-transmitting refractive element 183, and a convex lens 187 protrudes from the second light-transmitting refractive element 183 at a position corresponding to the optical channel 180 on the side of the second light-transmitting refractive element 183 facing the first light-transmitting refractive element 181; or, the refractive index of the first light-transmitting refractive element 181 is greater than that of the second light-transmitting refractive element 183, and a convex lens 187 protrudes from the first light-transmitting refractive element 181 at a position corresponding to the optical channel 180 on the side of the first light-transmitting refractive element 181 facing the second light-transmitting refractive element 183; and / or, The second light-transmitting refractive element 183 has auxiliary mounting structures 184 on both sides. The auxiliary mounting structures 184 are configured to mount the first light-transmitting refractive element 181. Each auxiliary mounting structure 184 includes at least one mounting protrusion inserted into the first light-transmitting refractive element 181. Alternatively, the auxiliary mounting structure 184 includes at least one mounting groove 185, in which at least a portion of the first light-transmitting refractive element 181 is mounted. And / or, The light-concentrating coupling component 18 also includes a light-transmitting refractive layer disposed between the second light-transmitting refractive element 183 and the first light-transmitting refractive element 181; the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

[0371] The structure of the focusing coupling component 18 can be referred to in the above embodiments, and will not be repeated here.

[0372] This application also provides an optical fiber communication device 1. For example... Figure 70 As shown, the optical fiber communication device 1 includes at least one of a focusing coupling component 18, a locking component 11, an adapter 12, a connector body 13, and an optical fiber connector. The specific structures of the focusing coupling component 18, the locking component 11, the adapter 12, the connector body 13, and the optical fiber connector 10 are as described in the above embodiments. Since the optical fiber communication device 1 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0373] The fiber optic communication equipment 1 may include at least one of the following: data center switch, fiber optic distribution frame, optical transmission equipment, optical module testing equipment, fiber laser, 5G base station optical interface equipment, 5G base station backhaul optical interface equipment, 6G base station fronthaul optical interface equipment, 6G base station backhaul optical interface equipment, quantum communication equipment 1, co-packaged optical onboard optical module interface equipment, optical circuit switching equipment, optical cross-connect equipment, near-packaged optical equipment, AI computing power cluster optical interconnect equipment, supercomputing center optical interconnect equipment, autonomous driving lidar, vehicle-mounted optical communication equipment, silicon photonics engine, fiber-to-the-home optical access equipment, satellite laser communication equipment, and distributed fiber optic sensing equipment.

[0374] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fiber optic connector (10), characterized in that, include: Two connector bodies (13), each of which is configured to be directly or indirectly connected to the optical fiber (2); A focusing coupling assembly (18) is disposed between the two connector bodies (13) and has at least two optical channels (180). The two side surfaces of the focusing coupling assembly (18) are configured to face the end faces of the optical fibers (2) connected to the two connector bodies (13), so that the end faces of the optical fibers (2) connected to the two connector bodies (13) are connected through the optical channels (180) of the focusing coupling assembly (18). The focusing coupling assembly (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element stacked together. (183) The refractive index of the first light-transmitting refractive element (181) is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.

51. There is no air gap between the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183). The two optical fibers (2) end faces are spatially optically coupled through the light-concentrating coupling component (18) rather than directly physically contacted. The light-concentrating coupling component (18) is configured to concentrate the light beam transmitted between the end faces of the two optical fibers (2) through the optical channel (180).

2. The fiber optic connector (10) as described in claim 1, characterized in that, The fiber optic connector (10) further includes an adapter (12), the adapter (12) including a mounting cavity (1202), and the focusing coupling assembly (18) located within the mounting cavity (1202); the two connector bodies (13) are configured to be inserted into the mounting cavity (1202) from opposite sides of the adapter (12), such that the two side surfaces of the focusing coupling assembly (18) are opposite to the end faces of the optical fibers (2) directly or indirectly connected to the two connector bodies (13); the focusing coupling assembly (18) is detachably mounted in the mounting cavity (1202); and / or, The focusing coupling component (18) is configured to focus the incident beam to reduce the spot size, thereby increasing the misalignment tolerance to compensate for the thermal deformation misalignment caused by the difference in thermal expansion coefficients between the connector body (13) and the focusing coupling component (18), so that the insertion loss between the two optical fiber (2) end faces remains stable in high and low temperature environments.

3. The fiber optic connector (10) as described in claim 1, characterized in that, The refractive index of the first light-transmitting refractive element (181) is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element (183) is located between two first light-transmitting refractive elements (181), and the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) is in contact with or has an air gap with the end face of the corresponding optical fiber (2). Alternatively, at least one first light-transmitting refractive element (181) is located between two second light-transmitting refractive elements (183), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) is in contact with or has an air gap with the end face of the corresponding optical fiber (2). (2) The end face of the optical fiber (2) abuts or has an air gap, or the focusing coupling assembly (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183), the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts or has an air gap with the end face of the corresponding optical fiber (2), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts or has an air gap with the end face of the corresponding optical fiber (2); and / or, The number of the first light-transmitting refractive elements (181) is multiple, and at least two of the first light-transmitting refractive elements (181) have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements (183) is multiple, and at least two of the second light-transmitting refractive elements (183) have different or the same refractive index; and / or, The first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) are integrally disposed; and / or, The first light-transmitting and refractive element (181) is made of an elastic material; and / or, At least one of the second light-transmitting refractive elements (183) has a refractive index greater than that of the first light-transmitting refractive element (181), or at least one of the second light-transmitting refractive elements (183) has a refractive index equal to that of the first light-transmitting refractive element (181), or at least one of the second light-transmitting refractive elements (183) has a refractive index less than that of the first light-transmitting refractive element (181); and / or, The focusing coupling assembly (18) includes a refractive index gradient material, the refractive index of which gradually changes continuously along the stacking direction of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183); and / or, The first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) are integrally formed by a refractive index gradient material. The refractive index of the refractive index gradient material continuously increases or decreases from one side surface of the light-concentrating coupling assembly (18) to the other side surface along the stacking direction of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183).

4. The fiber optic connector (10) as described in claim 3, characterized in that, The second light-transmitting and refractive element (183) includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element (183) is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element (181) and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) is configured to focus the incident light beam; and / or, The focusing coupling assembly (18) does not include a refractive index matching liquid; and / or, At least one of the first light-transmitting refractive elements (181) includes a concave lens (190) on the side opposite to the second light-transmitting refractive element (183), the concave lens (190) corresponding to the position of the light channel (180); and / or, Two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and there is an air gap between the two second light-transmitting refractive elements (183); or, two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and concave lenses (190) are formed by recessing the opposing sides of the two second light-transmitting refractive elements (183) corresponding to the position of the light channel (180); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and there is an air gap between the two first light-transmitting refractive elements (181); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and concave lenses (190) are formed by recessing the opposing sides of the two first light-transmitting refractive elements (181) corresponding to the position of the light channel (180); and / or, When the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) has an air gap with the end face of the corresponding optical fiber (2), the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); or, when the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) has an air gap with the end face of the corresponding optical fiber (2), the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); and / or, The refractive index of the first light-transmitting refractive element (181) is less than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the second light-transmitting refractive element (183) facing the first light-transmitting refractive element (181) at a position corresponding to the light channel (180). Alternatively, the refractive index of the first light-transmitting refractive element (181) is greater than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the first light-transmitting refractive element (181) facing the second light-transmitting refractive element (183) at a position corresponding to the light channel (180).

5. The fiber optic connector (10) as described in claim 4, characterized in that, The microlens array includes biconvex microlenses or monoconvex microlenses; and / or, A convex lens (187) is provided on both sides of the microlens array corresponding to the position of the optical channel (180); the curvature of the surfaces of the convex lenses (187) distributed on both sides of the microlens array is the same or different; or, a convex lens (187) is provided on one side of the microlens array corresponding to the optical channel (180), and a concave lens (190) is formed on the surface of the other side corresponding to the optical channel (180) which is either flat or concave.

6. The fiber optic connector (10) as described in claim 3, characterized in that, The second light-transmitting refractive element (183) has auxiliary mounting structures (184) on both sides, the auxiliary mounting structures (184) being configured to mount the first light-transmitting refractive element (181); the auxiliary mounting structure (184) includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element (181); or, the auxiliary mounting structure (184) includes at least one mounting groove (185), at least a portion of the first light-transmitting refractive element (181) being mounted in the at least one mounting groove (185); and / or, The light-concentrating coupling component (18) further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element (183) and the first light-transmitting refractive element (181); the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

7. The fiber optic connector (10) as described in claim 3, characterized in that, The material of the second light-transmitting refractive element (183) includes at least one of polyetherimide, cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyethersulfone, and polysulfone; and / or, The material of the first light-transmitting refractive element (181) includes at least one of silicone, polyurethane, transparent resin and fluorosilicone.

8. The fiber optic connector (10) as described in any one of claims 3 to 7, characterized in that, The connector body (13) is provided with a ferrule (14) configured to be directly or indirectly connected to the optical fiber (2); the ferrule (14) includes an abutment surface, the abutment surface is flush with the end face of the optical fiber (2) directly or indirectly connected to the ferrule (14), and the abutment surface abuts against one side surface of the focusing coupling assembly (18).

9. The fiber optic connector (10) as described in claim 8, characterized in that, The fiber optic connector (10) includes a positioning rod (16), and the ferrule (14) has a through positioning hole (141). The positioning rod (16) is inserted into the positioning holes (141) of the two ferrules (14) to position the two ferrules (14). The focusing coupling assembly (18) has a through hole (186) through which the positioning rod (16) passes.

10. The fiber optic connector (10) as described in claim 9, characterized in that, The through hole (186) is provided on the second light-transmitting and refractive element (183).

11. The fiber optic connector (10) as claimed in claim 1, characterized in that, The fiber optic connector (10) further includes a ferrule (14) configured to be directly or indirectly connected to the fiber optic cable (2). The connector body (13) includes a main housing (131), the main housing (131) having a mounting hole (1314), and the ferrule (14) being installed in the mounting hole (1314). The outer periphery of the ferrule (14) is provided with at least one anti-mistake step (142), and the inner periphery of the mounting hole (1314) is provided with an anti-mistake groove (1317) adapted to the at least one anti-mistake step (142), and the anti-mistake step (142) is at least partially accommodated in the anti-mistake groove (1317).

12. The fiber optic connector (10) as claimed in claim 11, characterized in that, The inner side of the anti-fooling groove (1317) is configured to abut against the anti-fooling step (142) to limit the sliding distance of the ferrule (14) relative to the main housing (131); the ferrule (14) includes an abutment surface, which is flush with the end face of the optical fiber (2) directly or indirectly connected to the ferrule (14), and the anti-fooling step (142) is located at the end of the ferrule (14) away from the abutment surface.

13. The fiber optic connector (10) as claimed in claim 11, characterized in that, The outer periphery of the insert (14) is also provided with a plurality of anti-foolproof steps (142), which are arranged along the circumference of the insert (14).

14. The fiber optic connector (10) as claimed in claim 13, characterized in that, At least two of the foolproof steps (142) have different heights; and / or, at least two of the foolproof steps (142) have different lengths extending circumferentially in the insert (14).

15. The fiber optic connector (10) as described in claim 14, characterized in that, At least one of the anti-foolproof steps (142) extends in the circumferential direction of the insert (14) for a length greater than or equal to 2.8 mm and less than or equal to 3.8 mm; and / or, At least one of the anti-foolproof steps (142) extends in the circumferential direction of the insert (14) for a length greater than or equal to 1 mm and less than or equal to 6 mm; and / or, The difference in length between at least two of the said foolproof steps (142) extending circumferentially in the insert (14) is greater than or equal to 0.2 mm; and / or, At least one of the anti-foolproof steps (142) has a width along the axial direction of the insert (14) greater than or equal to 0.1 mm and less than or equal to 5 mm; and / or, At least one of the aforementioned foolproof steps (142) has a height greater than or equal to 0.2 mm; and / or, The maximum thickness of the insert (14) is greater than or equal to 2.2 mm; and / or, One end of the insert (14) is provided with the anti-foolproof step (142), the dimension of the end of the insert (14) away from the anti-foolproof step (142) along the thickness direction is less than 2.0 mm, the width dimension of the insert (14) is less than 7.0 mm, and the length of the insert (14) along its axial direction is less than 15.06 mm.

16. The fiber optic connector (10) as claimed in claim 14, characterized in that, The lengths and / or heights of at least two of the foolproof steps (142) distributed on opposite sides of the insert (14) are different.

17. The fiber optic connector (10) as claimed in claim 1, characterized in that, The connector body (13) is provided with a plurality of ferrules (14), each of the ferrules (14) being configured to be directly or indirectly connected to the end of at least one of the optical fibers (2).

18. The fiber optic connector (10) as claimed in claim 1, characterized in that, The connector body (13) is provided with a ferrule (14) configured to be directly or indirectly connected to the optical fiber (2); the ferrule (14) includes an abutment surface, the abutment surface being flush with the end face of the optical fiber (2), and the abutment surface being at least one of an angular physical contact slope, a spherical surface, a physical contact plane perpendicular to the axis of the ferrule (14), and a super-physical contact plane perpendicular to the axis of the ferrule (14).

19. The fiber optic connector (10) as claimed in claim 18, characterized in that, The angle between the surface perpendicular to the axial direction of the insert (14) and the abutting surface is greater than or equal to 6° and less than or equal to 12°.

20. The fiber optic connector (10) as claimed in claim 1, characterized in that, The connector body (13) is a multi-core push-pull fiber optic connector body. The multi-core push-pull fiber optic connector body is provided with a mechanically movable ferrule. The mechanically movable ferrule is provided with multiple fiber holes and at least two positioning holes. The multiple fiber holes are located between the at least two positioning holes. The center distance between the at least two positioning holes is 4.60 mm or 5.30 mm. The multiple optical channels of the focusing coupling assembly correspond one-to-one with the multiple fiber optic holes of the mechanically transferable ferrule. The focusing coupling assembly is configured to focus the incident light beam through the optical channel to reduce the light spot, thereby increasing the misalignment tolerance and compensating for thermal deformation misalignment caused by the difference in thermal expansion coefficients between the mechanically transferable ferrule and the focusing coupling assembly, so that the insertion loss remains stable in high and low temperature environments.

21. The fiber optic connector (10) as claimed in claim 1, characterized in that, The fiber optic connector (10) further includes an adapter (12), a locking assembly (11), and a push-back structure (17). The adapter (12) includes a mounting cavity (1202). The two connector bodies (13) are configured to be inserted into the mounting cavity (1202) from opposite sides of the adapter (12) so that the end faces of the optical fibers (2) connected to the two connector bodies (13) are optically connected through the optical path (180) of the focusing coupling assembly (18). At least one of the connector bodies (13) is connected to the adapter (12) through the locking assembly (11). The locking assembly (11) is configured to provide locking force to the connector body (13). The locking assembly (11) includes a first locking structure (111) and a second locking structure (112). The adapter (12) is provided with at least one of the first locking structure (111) and the second locking structure (112). The connector body (13) is provided with at least one of the first locking structure (111) and the second locking structure (112). The first locking structure (111) and the second locking structure (112) are configured to engage and disengage with each other. The reverse push structure (17) is configured to apply a reset force to the connector body (13) opposite to the insertion direction to drive the connector body (13) to exit; When at least one of the connector bodies (13) is inserted into the mounting cavity (1202) to a first position, the first locking structure (111) and the second locking structure (112) engage with each other to lock the connector body (13) and the adapter (12); when the connector body (13) continues to move from the first position to a second position along the insertion direction, the first locking structure (111) and the second locking structure (112) disengage from each other, and the reverse push structure (17) drives the connector body (13) to withdraw in the opposite direction along the insertion direction.

22. The fiber optic connector (10) as claimed in claim 21, characterized in that, One of the connector bodies (13) is inserted into the mounting cavity (1202) from one side of the adapter (12) and connected to the adapter (12) via the locking assembly (11). The other connector body (13) is inserted into the mounting cavity (1202) from the other side of the adapter (12) and fixedly installed on the adapter (12), such that one of the connector bodies (13) can be inserted and removed from one side of the adapter (12), and the other connector body (13) is fixedly provided on the other side of the adapter (12). One of the connector bodies (13) includes a main housing (131), which has a mounting hole (1314) extending through the insertion direction. A ferrule (14) is fixedly installed in the mounting hole (1314). The ferrule (14) is configured to be directly or indirectly connected to the end of the optical fiber (2). The ferrule (14) has multiple optical fiber holes (143) and at least two positioning holes (141). The multiple optical fiber holes (143) are located between the at least two positioning holes (141). The center distance between the at least two positioning holes (141) is 4.60 mm or 5.30 mm. The ferrule (14) is a mechanically movable ferrule. The main housing (131) is positioned by cooperating with the adapter (12) through a positioning component to position the ferrule (14) on one side of the mounting cavity (1202) of the adapter (12). The focusing coupling component (18) is located inside the mounting cavity (1202), and the multiple optical channels (180) of the focusing coupling component (18) correspond one-to-one with the multiple optical fiber holes (141) of the ferrule (14).

23. A connector body (13), characterized in that, The connector body (13) is configured to be directly or indirectly connected to at least one optical fiber (2); wherein, the connector body (13) is provided with a focusing coupling component (18), the focusing coupling component (18) has at least two optical channels (180), one side surface of the focusing coupling component (18) is configured to be opposite to the end face of at least one optical fiber (2) directly or indirectly connected to the connector body (13), and the other side surface of the focusing coupling component (18) is configured to be opposite to the end face of at least another optical fiber (2), so that the end faces of the optical fibers (2) on both sides of the focusing coupling component (18) are connected through the optical channels (180) of the focusing coupling component (18); The light-concentrating coupling component (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183) stacked together. The refractive index of the first light-transmitting refractive element (181) is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.

51. There is no air gap between the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183). The two optical fibers (2) end faces are spatially optically coupled through the light-concentrating coupling component (18), rather than directly physically contacted. The light-concentrating coupling component (18) is configured to concentrate the light beam transmitted between the end faces of the two optical fibers (2) through the optical channel (180).

24. The connector body (13) as claimed in claim 23, characterized in that, The refractive index of the first light-transmitting refractive element (181) is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element (183) is located between two first light-transmitting refractive elements (181), and the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts against or has an air gap with the end face of the corresponding optical fiber (2). Alternatively, at least one first light-transmitting refractive element (181) is located between two second light-transmitting refractive elements (183), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts against or has an air gap with the end face of the corresponding optical fiber (2). The end face of the fiber (2) abuts against or has an air gap, or the focusing coupling assembly (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183), the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts against or has an air gap with the end face of the corresponding fiber (2), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts against or has an air gap with the end face of the corresponding fiber (2); and / or, The number of the first light-transmitting refractive elements (181) is multiple, and at least two of the first light-transmitting refractive elements (181) have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements (183) is multiple, and at least two of the second light-transmitting refractive elements (183) have different or the same refractive index; and / or, The first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) are integrally disposed; and / or, The first light-transmitting and refractive element (181) is made of an elastic material; and / or, The refractive index of at least one of the second light-transmitting refractive elements (183) is greater than the refractive index of the first light-transmitting refractive element (181), or the refractive index of at least one of the second light-transmitting refractive elements (183) is equal to the refractive index of the first light-transmitting refractive element (181), or the refractive index of at least one of the second light-transmitting refractive elements (183) is less than the refractive index of the first light-transmitting refractive element (181).

25. The connector body (13) as claimed in claim 24, characterized in that, The second light-transmitting and refractive element (183) includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element (183) is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element (181) and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) is configured to focus the incident light beam; and / or, The focusing coupling assembly (18) does not include a refractive index matching liquid; and / or, At least one of the first light-transmitting refractive elements (181) includes a concave lens (190) on the side opposite to the second light-transmitting refractive element (183), the concave lens (190) corresponding to the position of the light channel (180); and / or, Two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and there is an air gap between the two second light-transmitting refractive elements (183); or, two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and concave lenses (190) are formed by recessing the opposing sides of the two second light-transmitting refractive elements (183) corresponding to the position of the light channel (180); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and there is an air gap between the two first light-transmitting refractive elements (181); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and concave lenses (190) are formed by recessing the opposing sides of the two first light-transmitting refractive elements (181) corresponding to the position of the light channel (180); and / or, When the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) has an air gap with the end face of the corresponding optical fiber (2), the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); or, when the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) has an air gap with the end face of the corresponding optical fiber (2), the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); and / or, The refractive index of the first light-transmitting refractive element (181) is less than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the second light-transmitting refractive element (183) facing the first light-transmitting refractive element (181) at a position corresponding to the light channel (180); or, the refractive index of the first light-transmitting refractive element (181) is greater than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the first light-transmitting refractive element (181) facing the second light-transmitting refractive element (183) at a position corresponding to the light channel (180); and / or, The second light-transmitting refractive element (183) has auxiliary mounting structures (184) on both sides, the auxiliary mounting structures (184) being configured to mount the first light-transmitting refractive element (181); the auxiliary mounting structure (184) includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element (181); or, the auxiliary mounting structure (184) includes at least one mounting groove (185), at least a portion of the first light-transmitting refractive element (181) being mounted in the at least one mounting groove (185); and / or, The light-concentrating coupling component (18) further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element (183) and the first light-transmitting refractive element (181); the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

26. The connector body (13) as claimed in claim 23, characterized in that, The connector body (13) is provided with a ferrule (14) configured to be directly or indirectly connected to the optical fiber (2); the ferrule (14) includes an abutment surface, the abutment surface is flush with the end face of the optical fiber (2) directly or indirectly connected to the ferrule (14), and the abutment surface abuts against one side surface of the focusing coupling assembly (18).

27. The connector body (13) as claimed in claim 26, characterized in that, The connector body (13) includes a positioning rod (16), the ferrule (14) has a through positioning hole (141), the positioning rod (16) is configured to insert into the positioning hole (141) of two ferrules (14) to position the two ferrules (14); the focusing coupling assembly (18) has a through hole (186) through which the positioning rod (16) passes.

28. An adapter (12), characterized in that, The adapter (12) includes a mounting cavity (1202), and the adapter (12) is configured to allow two connector bodies (13) to be inserted into the mounting cavity (1202) from opposite sides of the adapter (12); wherein, the adapter (12) is provided with a focusing coupling assembly (18), the focusing coupling assembly (18) has at least two optical channels (180), and the two side surfaces of the focusing coupling assembly (18) are configured to be opposite to the end faces of the optical fibers (2) directly or indirectly connected to the two connector bodies (13), so that the end faces of the optical fibers (2) on both sides of the focusing coupling assembly (18) are connected through the optical channels (180) of the focusing coupling assembly (18); The light-concentrating coupling component (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183) stacked together. The refractive index of the first light-transmitting refractive element (181) is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.

51. There is no air gap between the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183). The two optical fibers (2) end faces are spatially optically coupled through the light-concentrating coupling component (18), rather than directly physically contacted. The light-concentrating coupling component (18) is configured to concentrate the light beam transmitted between the end faces of the two optical fibers (2) through the optical channel (180).

29. The adapter (12) as claimed in claim 28, characterized in that, The refractive index of the first light-transmitting refractive element (181) is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element (183) is located between two first light-transmitting refractive elements (181), and the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts against or has an air gap with the end face of the corresponding optical fiber (2). Alternatively, at least one first light-transmitting refractive element (181) is located between two second light-transmitting refractive elements (183), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts against or has an air gap with the end face of the corresponding optical fiber (2). The end face of the fiber (2) abuts against or has an air gap, or the focusing coupling assembly (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183), the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts against or has an air gap with the end face of the corresponding fiber (2), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts against or has an air gap with the end face of the corresponding fiber (2); and / or, The number of the first light-transmitting refractive elements (181) is multiple, and at least two of the first light-transmitting refractive elements (181) have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements (183) is multiple, and at least two of the second light-transmitting refractive elements (183) have different or the same refractive index; and / or, The first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) are integrally disposed; and / or, The first light-transmitting and refractive element (181) is made of an elastic material; and / or, The refractive index of at least one of the second light-transmitting refractive elements (183) is greater than the refractive index of the first light-transmitting refractive element (181), or the refractive index of at least one of the second light-transmitting refractive elements (183) is equal to the refractive index of the first light-transmitting refractive element (181), or the refractive index of at least one of the second light-transmitting refractive elements (183) is less than the refractive index of the first light-transmitting refractive element (181).

30. The adapter (12) as claimed in claim 29, characterized in that, The second light-transmitting and refractive element (183) includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element (183) is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element (181) and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) is configured to focus the incident light beam; and / or, The focusing coupling assembly (18) does not include a refractive index matching liquid; and / or, At least one of the first light-transmitting refractive elements (181) includes a concave lens (190) on the side opposite to the second light-transmitting refractive element (183), the concave lens (190) corresponding to the position of the light channel (180); and / or, Two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and there is an air gap between the two second light-transmitting refractive elements (183); or, two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and concave lenses (190) are formed by recessing the opposing sides of the two second light-transmitting refractive elements (183) corresponding to the position of the light channel (180); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and there is an air gap between the two first light-transmitting refractive elements (181); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and concave lenses (190) are formed by recessing the opposing sides of the two first light-transmitting refractive elements (181) corresponding to the position of the light channel (180); and / or, When the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) has an air gap with the end face of the corresponding optical fiber (2), the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); or, when the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) has an air gap with the end face of the corresponding optical fiber (2), the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); and / or, The refractive index of the first light-transmitting refractive element (181) is less than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the second light-transmitting refractive element (183) facing the first light-transmitting refractive element (181) at a position corresponding to the light channel (180); or, the refractive index of the first light-transmitting refractive element (181) is greater than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the first light-transmitting refractive element (181) facing the second light-transmitting refractive element (183) at a position corresponding to the light channel (180); and / or, The second light-transmitting refractive element (183) has auxiliary mounting structures (184) on both sides, the auxiliary mounting structures (184) being configured to mount the first light-transmitting refractive element (181); the auxiliary mounting structure (184) includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element (181); or, the auxiliary mounting structure (184) includes at least one mounting groove (185), at least a portion of the first light-transmitting refractive element (181) being mounted in the at least one mounting groove (185); and / or, The light-concentrating coupling component (18) further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element (183) and the first light-transmitting refractive element (181); the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

31. A focusing coupling component (18), characterized in that, The focusing coupling assembly (18) is used in the fiber optic connector (10) according to any one of claims 1 to 22; or, in the connector body (13) according to any one of claims 23 to 27; or, in the adapter (12) according to any one of claims 28 to 30. The focusing coupling component (18) has at least two optical channels (180), and the two side surfaces of the focusing coupling component (18) are configured to be opposite to the end faces of the optical fibers (2) on both sides of the focusing coupling component (18), so that the end faces of the optical fibers (2) on both sides of the focusing coupling component (18) are connected through the optical channels (180) of the focusing coupling component (18). The light-concentrating coupling component (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183) stacked together. The refractive index of the first light-transmitting refractive element (181) is less than or equal to 1.67, and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.

51. There is no air gap between the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183). The two optical fibers (2) end faces are spatially optically coupled through the light-concentrating coupling component (18), rather than directly physically contacted. The light-concentrating coupling component (18) is configured to concentrate the light beam transmitted between the end faces of the two optical fibers (2) through the optical channel (180).

32. The focusing coupling component (18) as claimed in claim 31, characterized in that, The refractive index of the first light-transmitting refractive element (181) is greater than or equal to 1.3 and less than or equal to 1.67; and / or, The refractive index of the second light-transmitting refractive element (183) is greater than or equal to 1.51 and less than or equal to 1.7; and / or, At least one second light-transmitting refractive element (183) is located between two first light-transmitting refractive elements (181), and the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts against or has an air gap with the end face of the corresponding optical fiber (2). Alternatively, at least one first light-transmitting refractive element (181) is located between two second light-transmitting refractive elements (183), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts against or has an air gap with the end face of the corresponding optical fiber (2). The end face of the fiber (2) abuts against or has an air gap, or the focusing coupling assembly (18) includes a first light-transmitting refractive element (181) and a second light-transmitting refractive element (183), the side of the first light-transmitting refractive element (181) facing away from the second light-transmitting refractive element (183) abuts against or has an air gap with the end face of the corresponding fiber (2), and the side of the second light-transmitting refractive element (183) facing away from the first light-transmitting refractive element (181) abuts against or has an air gap with the end face of the corresponding fiber (2); and / or, The number of the first light-transmitting refractive elements (181) is multiple, and at least two of the first light-transmitting refractive elements (181) have different or the same refractive index; and / or, The number of the second light-transmitting refractive elements (183) is multiple, and at least two of the second light-transmitting refractive elements (183) have different or the same refractive index; and / or, The first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) are integrally disposed; and / or, The first light-transmitting and refractive element (181) is made of an elastic material; and / or, The refractive index of at least one of the second light-transmitting refractive elements (183) is greater than the refractive index of the first light-transmitting refractive element (181), or the refractive index of at least one of the second light-transmitting refractive elements (183) is equal to the refractive index of the first light-transmitting refractive element (181), or the refractive index of at least one of the second light-transmitting refractive elements (183) is less than the refractive index of the first light-transmitting refractive element (181).

33. The focusing coupling component (18) as described in claim 32, characterized in that, The second light-transmitting and refractive element (183) includes at least one of a microlens array, a grating, a diffractive optical element, and a holographic optical element; and / or, At least one surface of the second light-transmitting and refractive element (183) is provided with an antireflective film; and / or, The absolute value of the difference between the refractive index of the first light-transmitting refractive element (181) and the refractive index of the second light-transmitting refractive element (183) is greater than or equal to 0.05; and / or, At least one of the first light-transmitting refractive element (181) and the second light-transmitting refractive element (183) is configured to focus the incident light beam; and / or, The focusing coupling assembly (18) does not include a refractive index matching liquid; and / or, At least one of the first light-transmitting refractive elements (181) includes a concave lens (190) on the side opposite to the second light-transmitting refractive element (183), the concave lens (190) corresponding to the position of the light channel (180); and / or, Two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and there is an air gap between the two second light-transmitting refractive elements (183); or, two second light-transmitting refractive elements (183) are located between two first light-transmitting refractive elements (181), and concave lenses (190) are formed by recessing the opposing sides of the two second light-transmitting refractive elements (183) corresponding to the position of the light channel (180); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and there is an air gap between the two first light-transmitting refractive elements (181); or, two first light-transmitting refractive elements (181) are located between two second light-transmitting refractive elements (183), and concave lenses (190) are formed by recessing the opposing sides of the two first light-transmitting refractive elements (181) corresponding to the position of the light channel (180); and / or, When the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) has an air gap with the end face of the corresponding optical fiber (2), the side of the first light-transmitting refractive element (181) away from the second light-transmitting refractive element (183) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); or, when the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) has an air gap with the end face of the corresponding optical fiber (2), the side of the second light-transmitting refractive element (183) away from the first light-transmitting refractive element (181) corresponding to the position of the optical fiber (2) is a plane or is provided with a convex lens (187); and / or, The refractive index of the first light-transmitting refractive element (181) is less than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the second light-transmitting refractive element (183) facing the first light-transmitting refractive element (181) at a position corresponding to the light channel (180); or, the refractive index of the first light-transmitting refractive element (181) is greater than that of the second light-transmitting refractive element (183), and a convex lens (187) is provided on the side of the first light-transmitting refractive element (181) facing the second light-transmitting refractive element (183) at a position corresponding to the light channel (180); and / or, The second light-transmitting refractive element (183) has auxiliary mounting structures (184) on both sides, the auxiliary mounting structures (184) being configured to mount the first light-transmitting refractive element (181); the auxiliary mounting structure (184) includes at least one mounting protrusion, the at least one mounting protrusion being inserted into the first light-transmitting refractive element (181); or, the auxiliary mounting structure (184) includes at least one mounting groove (185), at least a portion of the first light-transmitting refractive element (181) being mounted in the at least one mounting groove (185); and / or, The light-concentrating coupling component (18) further includes a light-transmitting refractive layer, which is disposed between the second light-transmitting refractive element (183) and the first light-transmitting refractive element (181); the material of the light-transmitting refractive layer includes at least one of cyclic olefin copolymer, cyclic olefin polymer, polymethyl methacrylate and polycarbonate.

34. An optical fiber communication device (1), characterized in that, Includes the fiber optic connector (10) as claimed in any one of claims 1 to 22; or includes the connector body (13) as claimed in any one of claims 23 to 27; or includes the adapter (12) as claimed in any one of claims 28 to 30; or includes the focusing coupling assembly (18) as claimed in any one of claims 31 to 33; The optical fiber communication equipment (1) includes at least one of the following: data center switch, optical fiber distribution frame, optical transmission equipment, optical module testing equipment, fiber laser, 5G base station optical interface equipment, 5G base station backhaul optical interface equipment, 6G base station fronthaul optical interface equipment, 6G base station backhaul optical interface equipment, quantum communication equipment (1), co-packaged optical onboard optical module interface equipment, optical circuit switching equipment, optical cross-connect equipment, near-packaged optical equipment, AI computing power cluster optical interconnect equipment, supercomputing center optical interconnect equipment, autonomous driving lidar, vehicle-mounted optical communication equipment, silicon photonics engine, fiber-to-the-home optical access equipment, satellite laser communication equipment, and distributed optical fiber sensing equipment.

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