Multi-core optical fiber connector and processing method thereof

Abstract

The invention relates to the technical field of optical fiber connectors, and provides a multi-core optical fiber connector and a processing method thereof, and the multi-core optical fiber connector comprises a multi-core tail handle optical fiber, a reference base, a PIN base and at least two PINs. The multi-core tail handle optical fiber comprises a connector insertion core; the reference base is positioned and connected to one side of the multi-core tail handle optical fiber, and the reference base is provided with at least two first coupling alignment reference holes; the PIN is arranged on the PIN base and connected with the PIN base, the PIN base is arranged on the other side of the multi-core tail handle optical fiber, the PIN penetrates through the first coupling alignment reference hole, and the free end of the PIN is used for being in positioning connection with a second coupling alignment reference hole in an external multi-core optical fiber interface assembly. And the connector insertion core is coupled and aligned with the interface insertion core of the multi-core optical fiber interface assembly. According to the invention, high-precision alignment connection is realized, stable transmission is further realized, and the connection problem of the jumper wire of the multi-core optical fiber connector is solved by matching with the multi-core optical fiber interface assembly.

Description

Technical Field

[0001] This invention relates to the technical field of fiber optic connectors, and more specifically, to a multi-core fiber optic connector and its processing method. Background Technology

[0002] In recent years, the rapid popularization of fiber optic broadband and the rapid development of emerging industries such as AI, cloud computing, and the Internet of Things have spurred a growing demand for high-capacity, high-speed information transmission. Against this backdrop, as the transmission capacity of a single optical fiber approaches the Shannon limit, the rapidly developing space-division multiplexing (SDM) technology is considered a key research direction for breaking through the transmission capacity limit of single-mode fiber and meeting the future needs of high-capacity, high-speed optical fiber systems. Multi-core fiber, as one of the core products adapted to SDM technology, has the significant advantage of expanding fiber capacity without increasing the space and cost of cable laying. Multi-core fiber is expected to be widely used in various scenarios such as big data centers, marine communications, aerospace, healthcare, and bridge monitoring. While significantly expanding capacity, multi-core fiber can also meet the requirements of green and low-cost operation. With the emergence of upgrade requirements for higher speeds, greater bandwidth, and lower latency in optical networks, multi-core fiber, as one of the most promising new types of optical fibers, has considerable development prospects. In the future, multi-core fiber will play an even more important role in human production and life.

[0003] Multi-core optical fibers integrate multiple independent fiber cores within a single fiber. A typical multi-core fiber may contain four to eight single-mode fiber cores, evenly distributed within a protective sheath approximately 125µm in diameter. This significantly improves overall bandwidth without increasing the outer diameter. In China, this type of multi-core optical fiber has been deployed in several live network pilot projects. Deployment results demonstrate that multi-core optical fibers can multiply transmission capacity, and crosstalk has been verified to be virtually unaffected over long-distance real-time transmission. However, the loss challenges arising from engineering splicing still need to be addressed, with short-distance interconnection showing greater potential.

[0004] Traditional single-core fiber coupling only requires aligning and connecting one core. Multi-core fibers, however, require precise alignment of multiple channels (e.g., 4-core, 7-core, 19-core) with the fiber interface components inside the optical module at the micrometer or even sub-micrometer level. Even a tiny misalignment of any channel will lead to a sharp increase in insertion loss and crosstalk for that channel.

[0005] The application of multi-core optical fibers requires addressing the need for extremely high alignment precision in their connections. Currently, multi-core optical fibers are mostly connected using fusion splicing, but this method has certain limitations, such as higher installation difficulty and more challenging maintenance. Furthermore, there is currently no unified standard for the production of multi-core optical fibers; each manufacturer's multi-core fibers exhibit variations in core arrangement, core size, and core spacing, which inherently increases the difficulty of fusion splicing between multi-core fibers. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-core fiber optic connector and its processing method, so as to solve the technical problem that the existing technology of connecting multi-core fibers by fusion splicing has limitations.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: On one hand, the present invention provides a multi-core fiber optic connector, comprising: A multi-core pigtail fiber, wherein the multi-core pigtail fiber includes a connector ferrule. A reference base is positioned and connected to one side of the multi-core tail shank optical fiber, and the reference base is provided with at least two first coupling alignment reference holes. PIN base; At least two PIN pins are provided on and connected to the PIN pin base, which is located on the other side of the multi-core tail shank fiber. The PIN pins pass through the first coupling alignment reference hole, and the free end of the PIN pins is used for positioning and connecting with the second coupling alignment reference hole on the external multi-core fiber interface assembly to couple and align the connector ferrule with the interface ferrule of the multi-core fiber interface assembly.

[0008] According to the multi-core fiber optic connector described above, the multi-core fiber optic connector further includes an elastic component. The PIN pin base has a placement groove on the side away from the PIN pin. The elastic component is placed in the placement groove and is sleeved on the multi-core tail shank fiber.

[0009] According to the multi-core fiber optic connector described above, the reference base is provided with two first coupling alignment reference holes, and the two first coupling alignment reference holes are located on both sides of the connector core. Correspondingly, the PIN pin base is provided with two PIN pins.

[0010] According to the multi-core fiber optic connector described above, the multi-core fiber optic connector further includes: The rear sleeve is fitted over the outside of the elastic component and abuts against the PIN base; The front sleeve passes through the PIN pin and covers the outside of the reference base and the PIN pin base, and the front sleeve is connected to the rear sleeve.

[0011] According to the multi-core fiber optic connector described above, the multi-core pigtail fiber includes a connector ferrule and a pigtail, wherein the connector ferrule includes: Multi-core optical fiber; A ferrule is disposed at one end of the multi-core optical fiber and is fixedly connected to the multi-core optical fiber. The tail shank is sleeved outside the connection between the ferrule and the multi-core optical fiber and is fixedly connected to the ferrule and the multi-core optical fiber.

[0012] According to the multi-core fiber optic connector described above, the tail shank includes: A connecting part, which is sleeved on the multi-core optical fiber and fixedly connected to the multi-core optical fiber; A positioning part is provided at one end of the connecting part and is fixedly connected to the connecting part. The positioning part is sleeved on the outside of the insert and is fixedly connected to the insert. The reference base is provided with a positioning groove, and the positioning part is inserted into the positioning groove to position and connect the reference base to the tailstock.

[0013] According to the multi-core fiber optic connector described above, the cross-section of the positioning part is rectangular, and the cross-section of the positioning groove is a corresponding rectangle.

[0014] According to the multi-core fiber optic connector described above, the PIN pin base is provided with a locking slot, and the PIN pin is provided with a locking part, which engages with the locking slot.

[0015] According to the multi-core fiber optic connector described above, the locking position includes a locking hole and a limiting slot. The locking part is an annular notch, and the end of the tail shank is inserted into the locking hole. The annular notch and the limiting slot are locked together.

[0016] On the other hand, the present invention also provides a method for processing a multi-core fiber optic connector, for processing the aforementioned multi-core fiber optic connector, the method comprising: One end of the multi-core fiber is assembled and fixed with the ferrule. The tail is assembled at the connection between the multi-core fiber and the ferrule and the tail is adjusted to achieve initial alignment. Then it is fixed to form a multi-core tail fiber. Position and assemble the reference base at one end of the tailstock, align the multi-core tailstock fiber with the first coupling alignment reference hole of the reference base, fine-tune the multi-core tailstock fiber, and fix the reference base and multi-core tailstock fiber when the product power is at its maximum and crosstalk is at its minimum. At least two pins are assembled onto a pin base and secured to form a pin assembly; Place the PIN pin assembly at the other end of the tailstock, and then pass the PIN pin through the first coupling alignment reference hole to assemble the PIN pin assembly onto the multi-core tailstock fiber with the reference base. Assemble the elastic component onto the PIN base and secure it. Assemble the back sleeve onto the outside of the PIN pin base and secure it. Thread the front sleeve onto the PIN pin, cover the reference base and PIN pin base, and then fix the front sleeve and the rear sleeve together.

[0017] The beneficial effects of the multi-core fiber optic connector and its processing method provided by this invention are at least as follows: The multi-core fiber optic connector and its processing method provided by this invention have a reference base positioned and installed on the multi-core pigtail fiber. This base can prevent rotation after the reference base and the multi-core pigtail fiber are connected. The reference base is provided with a first coupling alignment reference hole. Then, the PIN pin fixed on the PIN pin base passes through the first coupling alignment reference hole on the reference base. The free end of the PIN pin is used to position and connect with the second coupling alignment reference hole on the external multi-core fiber optic interface assembly. This achieves coupling alignment of the connector ferrule of the multi-core fiber optic connector and the interface ferrule of the multi-core fiber optic interface assembly, realizing high-precision alignment and connection, and thus achieving stable transmission. In conjunction with the multi-core fiber optic interface assembly, it solves the connection problem of multi-core fiber optic connector patch cords. Moreover, this coupling alignment method is simple to operate, accurate and fast in alignment. At the same time, this coupling alignment method is also applicable to any multi-core fiber with different fiber core arrangements, fiber core sizes, fiber core spacing, etc., for which there is currently no unified standard, and has a wide range of applications. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural schematic diagram of the multi-core fiber optic connector provided by the present invention; Figure 2 A three-dimensional exploded view of the multi-core fiber optic connector provided by the present invention; Figure 3 This is a schematic diagram of the exploded structure of the multi-core fiber optic connector provided by the present invention after the outer shell has been removed. Figure 4 An exploded view of the multi-core tailstock optical fiber and reference base provided by the present invention; Figure 5 A schematic diagram of the combined structure of the multi-core tailstock optical fiber and the reference base provided by the present invention; Figure 6 An exploded view of the PIN pin base and PIN pin provided by the present invention; Figure 7 This is a schematic diagram of the structure of the multi-core optical fiber interface assembly provided by the present invention; Figure 8An enlarged view of the multi-core optical fiber alignment provided by the present invention; Figure 9 A schematic diagram of the coupling and alignment structure of the multi-core fiber optic connector and the multi-core fiber optic interface assembly provided by the present invention; Figure 10 A flowchart illustrating the processing method of the multi-core fiber optic connector provided by this invention.

[0020] The following are the labeling elements in the figure: 100. Multi-core fiber optic connector; 10. Multi-core tailstock fiber optic cable; 11. Connector ferrule; 111. Multi-core fiber optic cable; 112. Ferrule; 12. Tailstock; 121. Connecting part; 122. Positioning part; 20. Reference base; 21. First coupling alignment reference hole; 22. Positioning groove; 30. PIN pin base; 31. Placement groove; 32. Locking position; 321. Snap-fit ​​hole; 322. Limiting bayonet; 323. Guide port; 40. PIN pin; 41. Snap-fit ​​part; 50. Elastic component; 60. Rear sleeve; 61. Fastener; 70. Front sleeve; 71. Locking position; 200. Multi-core fiber optic interface assembly; 201. Second coupling alignment reference hole; 202. Interface ferrule. Detailed Implementation

[0021] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. 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. "A plurality" means two or more, unless otherwise explicitly defined.

[0023] Please see Figures 1 to 4This embodiment provides a multi-core fiber optic connector 100, including a multi-core tailstock fiber 10, a reference base 20, a PIN pin base 30, and at least two PIN pins 40. The multi-core fiber 101 includes, but is not limited to, 2-core, 4-core, and 8-core fibers. The multi-core tailstock fiber 10 includes a connector ferrule 11; the reference base 20 is positioned and connected to one side of the multi-core tailstock fiber 10, and the reference base 20 is provided with at least two first coupling alignment reference holes 21. The material of the reference base 20 can be metal, ceramic, or plastic, and is not limited here. The PIN pin 40 is disposed on and connected to the PIN pin base 30, which is located on the other side of the multi-core tail fiber 10. The PIN pin 40 passes through the first coupling alignment reference hole 21, and the free end of the PIN pin 40 is used for positioning and connecting with the second coupling alignment reference hole 201 on the external multi-core fiber interface assembly 200 to couple and align the connector ferrule 11 with the interface ferrule 202 of the multi-core fiber interface assembly 200 (see reference). Figure 7 , Figure 8 and Figure 9 ).

[0024] The working principle and beneficial effects of the multi-core fiber optic connector 100 provided in this embodiment are as follows: The multi-core fiber optic connector 100 provided in this embodiment has a reference base 20 positioned and installed on the multi-core tailstock fiber 10. This base 20 can prevent rotation after the reference base 20 and the multi-core tailstock fiber 10 are connected. The reference base 20 is provided with a first coupling alignment reference hole 21. Then, the PIN pin 40 fixed on the PIN pin base 30 passes through the first coupling alignment reference hole 21 on the reference base 20. The free end of the PIN pin 40 is used to position and connect with the second coupling alignment reference hole 201 on the external multi-core fiber optic interface assembly 200. This achieves coupling alignment of the connector ferrule 11 of the multi-core fiber optic connector 100 and the interface ferrule 202 of the multi-core fiber optic interface assembly 200, realizing high-precision alignment and connection, thereby achieving stable transmission. In conjunction with the multi-core fiber optic interface assembly 200, it solves the connection problem of the multi-core fiber optic connector 100 patch cord. Moreover, this coupling alignment method is simple to operate, accurate and fast in alignment. At the same time, this coupling alignment method is also applicable to any multi-core fiber with different fiber core arrangements, fiber core sizes, fiber core spacing, etc., for which there is currently no unified standard, and has a wide range of applications.

[0025] In one embodiment, see Figure 3The multi-core fiber optic connector 100 further includes an elastic component 50. The PIN pin base 30 has a placement groove 31 on the side away from the PIN pin 40. The elastic component 50 is placed within the placement groove 31 and is sleeved on the multi-core tail fiber 10. The elastic component 50 ensures that the multi-core fiber optic connector 100 has a certain degree of elasticity when mating with the multi-core fiber optic interface assembly 200, avoiding damage to the product from hard impacts. Optionally, the elastic component 50 is a spring. It should be understood that the elastic component 50 is not limited to the aforementioned spring and can be other components; no limitation is made here.

[0026] In one embodiment, see Figure 4 The reference base 20 is provided with two first coupling alignment reference holes 21, and the two first coupling alignment reference holes 21 are located on both sides of the connector ferrule 11. Correspondingly, the PIN pin base 30 is provided with two PIN pins 40. The two PIN pins 40 and the two first coupling alignment reference holes 21 are configured to cooperate to avoid misalignment caused by the floating rotation of the multi-core tail fiber 10 due to the deformation of the elastic component 50 when the multi-core fiber interface assembly 200 and the multi-core fiber connector 100 are connected.

[0027] In one embodiment, see Figure 1 The multi-core fiber optic connector 100 further includes a rear sleeve 60 and a front sleeve 70. The rear sleeve 60 is fitted over the elastic member 50 and abuts against the PIN pin base 30; the PIN pin 40 passes through the front sleeve 70, and the front sleeve 70 covers the reference base 20 and the PIN pin base 30, and the front sleeve 70 is detachably connected to the rear sleeve 60. The cooperation of the rear sleeve 60 and the front sleeve 70 can enclose and protect the multi-core fiber optic connector 100. The shape of the shell formed by the rear sleeve 60 and the front sleeve 70 can be circular or square, and is not limited here.

[0028] Optionally, the front sleeve 70 has two fastening positions 71 on each side, and the rear sleeve 60 has two fasteners 61 on each side, and the fasteners 61 are fastened to the fastening positions 71.

[0029] In one embodiment, see Figure 4The multi-core tailstock optical fiber 10 includes a connector ferrule 11 and a tailstock 12. The connector ferrule 11 includes a multi-core optical fiber 111 and a ferrule 112. The ferrule 112 is disposed at one end of the multi-core optical fiber 111 and is fixedly connected to the multi-core optical fiber 111. The tailstock 12 is sleeved outside the connection between the ferrule 112 and the multi-core optical fiber 111 and is fixedly connected to both the ferrule 112 and the multi-core optical fiber 111. The tailstock 12 can be made of metal, ceramic, or plastic, and there is no limitation here. After the ferrule 112 and the multi-core optical fiber 111 are assembled and connected, the tailstock 12 is then sleeved at the connection between the multi-core optical fiber 111 and the ferrule 112, making the entire multi-core tailstock optical fiber 10 structure more stable and robust.

[0030] In one embodiment, see Figure 4 The tailstock 12 includes a connecting portion 121 and a positioning portion 122. The connecting portion 121 is sleeved on the multi-core optical fiber 111 and fixedly connected to the multi-core optical fiber 111; the positioning portion 122 is disposed at one end of the connecting portion 121 and fixedly connected to the connecting portion 121, and the positioning portion 122 is sleeved on the outside of the ferrule 112 and fixedly connected to the ferrule 112; the reference base 20 is provided with a positioning groove 22, and the positioning portion 122 is inserted into the positioning groove 22 to position and connect the reference base 20 to the tailstock 12. The cooperation between the positioning portion 122 and the positioning groove 22 is used to position the connection position of the reference base 20 and the multi-core tailstock optical fiber 10.

[0031] In one embodiment, see Figure 4 The positioning part 122 has a rectangular cross-section, and the positioning groove 22 has a corresponding rectangular cross-section. Setting the positioning part 122 as rectangular facilitates the positioning and connection of the reference base 20 and the multi-core tail fiber 10, and prevents arbitrary rotation after connection, ensuring structural stability.

[0032] Optionally, the positioning part 122 with a rectangular cross-section has rounded corners on each edge, which facilitates the smooth installation of the reference base 20 onto the multi-core tailstock fiber 10.

[0033] In one embodiment, see Figure 6 The PIN base 30 is provided with a locking slot 32, and the PIN 40 is provided with a locking part 41, which engages with the locking slot 32. The engagement of the locking slot 32 and the locking part 41 allows the PIN 40 to be quickly connected to the PIN base 30, and the connection structure is stable. Optionally, the locking slot 32 is also provided with a guide port 323 to facilitate the installation of the PIN 40 into the locking slot 32.

[0034] In one embodiment, see Figure 6The locking position 32 includes a locking hole 321 and a limiting locking slot 322. The locking part 41 is an annular notch. The end of the tail shank 12 is inserted into the locking hole 321, and the annular notch and the limiting locking slot 322 engage. The PIN pin 40 is inserted into the locking hole 321, and the annular notch and the limiting locking slot 322 are engaged, thereby making the PIN pin 40 stably connected to the PIN pin base 30, and the connection structure is stable.

[0035] Please see Figure 10 This embodiment also provides a method for processing a multi-core fiber optic connector 100, used to process the multi-core fiber optic connector 100 described above. The processing method includes: S100: Assemble and fix one end of the multi-core optical fiber 111 to the ferrule 112. Assemble the tail shank 12 at the connection between the multi-core optical fiber 111 and the ferrule 112, adjust the tail shank 12 to achieve initial alignment, and then fix it to form a multi-core tail shank optical fiber 10. Optionally, after the multi-core optical fiber 111 and the ferrule 112 are assembled, they are bonded and cured with glue, and after the tail shank 12 is initially aligned, it is bonded and cured with glue.

[0036] S200: Position and assemble the reference base 20 at one end of the tailstock 12. Align the multi-core tailstock fiber 10 with the first coupling alignment reference hole 21 of the reference base 20. Fine-tune the multi-core tailstock fiber 10. When the product power is at its maximum and crosstalk is at its minimum, fix the reference base 20 and the multi-core tailstock fiber 10. Specifically, fine-tune the multi-core tailstock fiber 10 so that the fiber cores of the two ferrules 112 multi-core fibers 111 are aligned.

[0037] Optionally, after the reference base 20 and the multi-core tail fiber 10 are assembled, they can be bonded and cured with glue or fixed by welding.

[0038] Optionally, a rectangular positioning part 122 is provided on the tailstock 12, and a corresponding rectangular positioning groove 22 is provided on the reference base 20. The positioning part 122 is inserted into the positioning groove 22 to position and connect the reference base 20 to the tailstock 12.

[0039] S300: At least two PIN pins 40 are assembled onto and secured to the PIN pin base 30 to form a PIN pin assembly. Optionally, the PIN pins 40 are assembled onto the PIN pin base 30 and then bonded and cured with adhesive.

[0040] S400: Place the PIN assembly at the other end of the tailstock 12, and then pass the PIN 40 through the first coupling alignment reference hole 21 to assemble the PIN assembly onto the multi-core tailstock fiber 10 with the reference base 20. After the PIN 40 is assembled onto the multi-core tailstock fiber 10, it is then bonded and cured with adhesive.

[0041] S500: Assemble the elastic component 50 onto the PIN base 30 and secure it. Optionally, the elastic component 50 may be assembled onto the PIN base 30 and then bonded and cured with adhesive.

[0042] S600: Assemble the rear sleeve 60 onto the outside of the PIN base 30 and secure it. Optionally, the rear sleeve 60 can be glued and cured after being assembled onto the PIN base 30.

[0043] S700: The front sleeve 70 is threaded onto the PIN pin 40, and the reference base 20 and PIN pin base 30 are covered. Then, the front sleeve 70 and the rear sleeve 60 are fixed together. Optionally, after the front sleeve 70 and the rear sleeve 60 are assembled, they are fixed by fasteners and snap-fitting, which not only makes the connection structure strong, but also makes disassembly and assembly convenient.

[0044] In summary, this embodiment provides a multi-core fiber optic connector 100, including a multi-core tailstock fiber 10, a reference base 20, a PIN pin base 30, and at least two PIN pins 40. The multi-core tailstock fiber 10 includes a connector ferrule 11; the reference base 20 is positioned and connected to one side of the multi-core tailstock fiber 10, and the reference base 20 is provided with at least two first coupling alignment reference holes 21. The PIN pins 40 are disposed on and connected to the PIN pin base 30, the PIN pin base 30 is disposed on the other side of the multi-core tailstock fiber 10, the PIN pins 40 pass through the first coupling alignment reference holes 21, and the free end of the PIN pins 40 is used for positioning and connecting with a second coupling alignment reference hole 201 on an external multi-core fiber optic interface assembly 200, so as to couple and align the connector ferrule 11 with the interface ferrule 202 of the multi-core fiber optic interface assembly 200. This embodiment also provides a processing method for a multi-core fiber optic connector 100, used to process the aforementioned multi-core fiber optic connector 100. The processing method includes: S100: Assembling and fixing one end of the multi-core fiber 111 to the ferrule 112; assembling the tail shank 12 at the connection between the multi-core fiber 111 and the ferrule 112 and adjusting the tail shank 12 to achieve preliminary alignment, and then fixing it to form a multi-core tail shank fiber 10. S200: Positioning and assembling the reference base 20 at one end of the tail shank 12; aligning the multi-core tail shank fiber 10 with the first coupling alignment reference hole 21 of the reference base 20; fine-tuning the multi-core tail shank fiber 10; and fixing the reference base 20 and the multi-core tail shank fiber 10 when the product power is at its maximum and crosstalk is at its minimum. S300: Assembling and fixing at least two PIN pins 40 onto the PIN pin base 30 to form a PIN pin assembly. S400: Place the PIN pin assembly at the other end of the tailstock 12, and then pass the PIN pin 40 through the first coupling alignment reference hole 21 to assemble the PIN pin assembly onto the multi-core tailstock fiber 10 with the reference base 20. S500: Assemble the elastic member 50 onto the PIN pin base 30 and secure it. S600: Assemble the rear sleeve 60 onto the outside of the PIN pin base 30 and secure it. S700: Pass the front sleeve 70 onto the PIN pin 40, cover the reference base 20 and the PIN pin base 30, and then secure the front sleeve 70 and the rear sleeve 60.The multi-core fiber optic connector and its processing method provided in this embodiment have a reference base 20 positioned and installed on the multi-core tailstock fiber 10. This base 20 can prevent rotation after the reference base 20 and the multi-core tailstock fiber 10 are connected. The reference base 20 is provided with a first coupling alignment reference hole 21. Then, the PIN pin 40 fixed on the PIN pin base 30 passes through the first coupling alignment reference hole 21 on the reference base 20. The free end of the PIN pin 40 is used to position and connect with the second coupling alignment reference hole 201 on the external multi-core fiber optic interface assembly 200. This achieves coupling alignment of the connector ferrule 11 of the multi-core fiber optic connector 100 and the interface ferrule 202 of the multi-core fiber optic interface assembly 200, realizing high-precision alignment and connection, thereby achieving stable transmission. In conjunction with the multi-core fiber optic interface assembly 200, it solves the connection problem of the multi-core fiber optic connector 100 patch cord. Moreover, this coupling alignment method is simple to operate, accurate and fast in alignment. At the same time, this coupling alignment method is also applicable to any multi-core fiber with different fiber core arrangements, fiber core sizes, fiber core spacing, etc., for which there is currently no unified standard, and has a wide range of applications.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-core fiber optic connector, characterized in that, include: A multi-core pigtail fiber, wherein the multi-core pigtail fiber includes a connector ferrule. A reference base is positioned and connected to one side of the multi-core tail shank optical fiber, and the reference base is provided with at least two first coupling alignment reference holes. PIN base; At least two PIN pins are provided on and connected to the PIN pin base, which is located on the other side of the multi-core tail shank fiber. The PIN pins pass through the first coupling alignment reference hole, and the free end of the PIN pins is used for positioning and connecting with the second coupling alignment reference hole on the external multi-core fiber interface assembly to couple and align the connector ferrule with the interface ferrule of the multi-core fiber interface assembly.

2. The multi-core fiber optic connector according to claim 1, characterized in that, The multi-core fiber optic connector also includes an elastic component. The PIN pin base has a placement groove on the side away from the PIN pin. The elastic component is placed in the placement groove and is sleeved on the multi-core tail shank fiber.

3. The multi-core fiber optic connector according to claim 2, characterized in that, The reference base is provided with two first coupling alignment reference holes, and the two first coupling alignment reference holes are located on both sides of the connector core. Correspondingly, the PIN pin base is provided with two PIN pins.

4. The multi-core fiber optic connector according to claim 2, characterized in that, The multi-core fiber optic connector also includes: The rear sleeve is fitted over the outside of the elastic component and abuts against the PIN base; The front sleeve passes through the PIN pin and covers the outside of the reference base and the PIN pin base, and the front sleeve is connected to the rear sleeve.

5. The multi-core fiber optic connector according to claim 1, characterized in that, The multi-core tailstock optical fiber includes a connector ferrule and a tailstock, the connector ferrule comprising: Multi-core optical fiber; A ferrule is disposed at one end of the multi-core optical fiber and is fixedly connected to the multi-core optical fiber. The tail shank is sleeved outside the connection between the ferrule and the multi-core optical fiber and is fixedly connected to the ferrule and the multi-core optical fiber.

6. The multi-core fiber optic connector according to claim 5, characterized in that, The tailstock includes: A connecting part, which is sleeved on the multi-core optical fiber and fixedly connected to the multi-core optical fiber; A positioning part is provided at one end of the connecting part and is fixedly connected to the connecting part. The positioning part is sleeved on the outside of the insert and is fixedly connected to the insert. The reference base is provided with a positioning groove, and the positioning part is inserted into the positioning groove to position and connect the reference base to the tailstock.

7. The multi-core fiber optic connector according to claim 6, characterized in that, The cross-section of the positioning part is rectangular, and the cross-section of the positioning groove is a corresponding rectangle.

8. The multi-core fiber optic connector according to claim 1, characterized in that, The PIN base is provided with a locking position, and the PIN is provided with a locking part, which engages with the locking position.

9. The multi-core fiber optic connector according to claim 8, characterized in that, The locking position includes a locking hole and a limiting slot. The locking part is an annular notch. The end of the tail shank is inserted into the locking hole, and the annular notch is locked in place with the limiting slot.

10. A method for processing a multi-core fiber optic connector, characterized in that, The processing method for manufacturing the multi-core fiber optic connector according to any one of claims 1 to 9 includes: One end of the multi-core fiber is assembled and fixed with the ferrule. The tail is assembled at the connection between the multi-core fiber and the ferrule and the tail is adjusted to achieve initial alignment. Then it is fixed to form a multi-core tail fiber. Position and assemble the reference base at one end of the tailstock, align the multi-core tailstock fiber with the first coupling alignment reference hole of the reference base, fine-tune the multi-core tailstock fiber, and fix the reference base and multi-core tailstock fiber when the product power is at its maximum and crosstalk is at its minimum. At least two pins are assembled onto a pin base and secured to form a pin assembly; Place the PIN pin assembly at the other end of the tailstock, and then pass the PIN pin through the first coupling alignment reference hole to assemble the PIN pin assembly onto the multi-core tailstock fiber with the reference base. Assemble the elastic component onto the PIN base and secure it. Assemble the back sleeve onto the outside of the PIN pin base and secure it. Thread the front sleeve onto the PIN pin, cover the reference base and PIN pin base, and then fix the front sleeve and the rear sleeve together.

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