Optical path connector of optical module

Abstract

The utility model relates to the field of optical path connectors, and particularly discloses an optical path connector of an optical module, which comprises a main connector, a transmitting connector and a receiving connector, the main connector is electrically connected with two groups of optical fibers, and the two groups of optical fibers respectively comprise a receiving end and a transmitting end. The receiving end and the transmitting end are electrically connected with the receiving connector and the transmitting connector respectively; the transmitting connector comprises a first substrate, the end face of the side, away from the main connector, of the first substrate is arranged to be a first inclined face, and the transmitting end is flush with the end face of the first inclined face. The receiving connector comprises a second substrate, the end face of the side, away from the main connector, of the second substrate is arranged to be a second inclined face, and the receiving end is flush with the end face of the second inclined face. The first substrate and the second substrate are both provided with the V-shaped grooves, the V-shaped grooves are of equiangular triangle structures, the outer walls of the optical fibers are tangent to the three faces of the V-shaped grooves, accurate positioning of the optical fibers in the connector is ensured, and the stability of the optical fibers in the connector is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of optical path connectors, in particular to an optical path connector of an optical module. Background Art

[0002] Optical modules are optoelectronic devices that perform photoelectric and electro-optical conversion. The transmitting end of the optical module converts electrical signals into optical signals, and the receiving end converts optical signals into electrical signals. With the development of high-speed optical modules, MT-FA connectors are increasingly used in the production of optical transceivers.

[0003] The existing patent application number is CN202221959756.5, and the optical fiber connector and optical chip connection device include an upper glass cover plate, a middle glass cover plate, a lower glass cover plate and an optical fiber array. The upper glass cover plate is connected to the middle glass cover plate, and the middle glass cover plate is staggered and connected to the lower glass cover plate. The middle glass cover plate is provided with a V-shaped groove, and the optical fiber array is fixedly connected to the V-shaped groove by the upper glass cover plate and the middle glass cover plate.

[0004] As described in the patent document above, existing optical connectors usually set V-grooves on the substrate to fix the fiber core. However, in the prior art, the V-grooves are usually processed into isosceles triangles based on the fiber core diameter, which can easily cause the optical fiber to be subjected to uneven stress during the connection process, especially near the corners where the two waists meet the bottom edge. This uneven stress distribution may increase the risk of optical fiber damage or affect the stability of signal transmission. Utility Model Content

[0005] The utility model provides an optical path connector of an optical module to solve the technical problems of easy damage of optical fiber and instability of signal transmission in the prior art.

[0006] In order to solve the above problems, the utility model provides an optical path connector of an optical module adopts the following technical solution: comprising a main connector, a transmitting connector, and a receiving connector, the main connector is electrically connected to an optical fiber, the optical fiber comprises two groups, the two groups of optical fibers respectively comprise a receiving end and a transmitting end, the receiving end and the transmitting end are electrically connected to the receiving connector and the transmitting connector respectively;

[0007] The transmitting connector comprises a first substrate, an end surface of the first substrate away from the main connector is set as a first inclined surface, and the transmitting end is flush with the end surface of the first inclined surface;

[0008] The receiving connector comprises a second substrate, an end surface of the second substrate on one side away from the main connector is set as a second inclined surface, and the receiving end is flush with the end surface of the second inclined surface;

[0009] The first substrate and the second substrate are both provided with V-grooves, the V-grooves are equiangular triangle structures, and the outer wall of the optical fiber is tangent to three sides of the V-grooves.

[0010] Further, based on the axial direction of the optical fiber, the first inclined surface is inclined along a horizontal transverse direction, and the second inclined surface is inclined along a horizontal longitudinal direction.

[0011] Furthermore, the inclination angle of the first inclined surface is ∠1, ∠1 is (5-10)°, and the inclination angle of the second inclined surface is ∠2, ∠2 is (40-50)°.

[0012] Furthermore, a third inclined surface is provided at one end of the main connector away from the optical fiber, and the inclination angle of the third inclined surface is ∠3, and ∠3 is (5-10)°.

[0013] Furthermore, the main connector is provided with a cover, and the material of the cover is PI material.

[0014] Furthermore, a colored layer is sprayed on the surface of the optical fiber.

[0015] Furthermore, the transmitting connector also includes a first cover plate, and the receiving connector also includes a second cover plate. The first cover plate and the second cover plate both cover the V-groove. The first substrate, the first cover plate, and the transmitting end are fixedly connected, and the second substrate, the second cover plate, and the receiving end are fixedly connected.

[0016] Furthermore, the V-grooves include a plurality of V-grooves, which are arranged horizontally side by side and evenly distributed in the center on the first substrate surface and the second substrate surface, the sides of two adjacent V-grooves on the first substrate intersect, and there is a gap between two adjacent V-grooves on the second substrate.

[0017] Furthermore, the height of the transmitting connector is set to H1, the height of the central axis of the optical fiber from the top end surface of the first cover plate is H2, H1:H2 is 1:(0.5-0.6), the width of the transmitting connector is set to L1, the spacing between the central axes of two adjacent optical fibers is L2, the spacing between the side wall of the transmitting connector and the central axis of the optical fiber close to the side wall is L3, L1:L2:L3 is 1:(0.09-0.1):(0.3-0.4).

[0018] Furthermore, the height of the receiving connector is set to H3, the height of the central axis of the optical fiber from the top end face of the second cover plate is H4, H3:H4 is 1:(0.1-0.2), the width of the receiving connector is set to L4, the spacing between the central axes of two adjacent optical fibers is L5, the spacing between the side wall of the transmitting connector and the central axis of the optical fiber close to the side wall is L6, and L4:L5:L6 is 1:(0.1-0.3):(0.1-0.3).

[0019] The beneficial effects of the optical path connector of an optical module provided by the utility model are:

[0020] 1. The V-groove with an equiangular triangle structure provides a stable supporting surface for the optical fiber, so that the force on the optical fiber is more uniform when it is fixed in the V-groove, making it less prone to damage. It can also reduce the offset and dislocation of the optical fiber during the connection process, ensuring the precise positioning of the optical fiber in the connector, ensuring the stable transmission of the optical signal, and enhancing the stability of the optical fiber in the connector. It can effectively reduce signal interruption or attenuation caused by poor connection, and improve the stability and reliability of the entire system;

[0021] 2. The setting of the first inclined surface and the second inclined surface helps the smooth transition of the optical fiber during the connection process and reduces the attenuation and reflection of the optical signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0023] Figure 1 This is a structural schematic diagram of an optical path connector of an optical module of the utility model;

[0024] Figure 2 This is a schematic structural diagram of a transmitting connector of an optical path connector of an optical module of the utility model;

[0025] Figure 3 A schematic diagram of the side structure of a transmitting connector of an optical path connector of an optical module of the utility model;

[0026] Figure 4 It is a front view structural schematic diagram of a transmitting connector of an optical path connector of an optical module of the utility model;

[0027] Figure 5 This is a schematic structural diagram of a receiving connector of an optical path connector of an optical module of the utility model;

[0028] Figure 6 It is a front view structural schematic diagram of a receiving connector of an optical path connector of an optical module of the utility model;

[0029] Figure 7 A schematic diagram of the side structure of a receiving connector of an optical path connector of an optical module of the utility model;

[0030] Figure 8 This is a structural schematic diagram of a main connector of an optical path connector of an optical module of the utility model;

[0031] Fig. 9The utility model is a schematic side view of the structure of a main connector of an optical path connector of an optical module.

[0032] Description of reference numerals:

[0033] 1. Main connector; 11. Third inclined surface; 12. Cover;

[0034] 2. transmitting connector; 21. first substrate; 211. first inclined surface; 22. first cover plate;

[0035] 3. receiving connector; 31. second substrate; 311. second inclined surface; 32. second cover plate;

[0036] 4. Optical fiber; 41. Receiving end; 42. Transmitting end;

[0037] 5. V-groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0039] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0040] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0041] The utility model provides an optical path connector for an optical module, such as Figures 1 to 9 As shown, it includes a main connector 1, a transmitting connector 2, and a receiving connector 3. The main connector 1 is electrically connected to an optical fiber 4. The optical fiber 4 includes two groups. The two groups of optical fibers 4 respectively include a receiving end 41 and a transmitting end 42. The receiving end 41 and the transmitting end 42 are electrically connected to the receiving connector 3 and the transmitting connector 2 respectively; the transmitting connector 2 includes a first substrate 21, and the end face of the first substrate 21 on one side away from the main connector 1 is set as a first inclined surface 211, and the transmitting end 42 is flush with the end face of the first inclined surface 211; the receiving connector 3 includes a second substrate 31, and the end face of the second substrate 31 on one side away from the main connector 1 is set as a second inclined surface 311, and the receiving end 41 is flush with the end face of the second inclined surface 311; the first substrate 21 and the second substrate 31 are both provided with a V-groove 5, the V-groove 5 is an equiangular triangle structure, and the outer wall of the optical fiber 4 is tangent to the V-groove 5 on three sides.

[0042] In this embodiment, the optical path connector is composed of three parts: a main connector 1, a transmitting connector 2, and a receiving connector 3. The main connector 1 is the core, connected to the transmitting connector 2 and the receiving connector 3 through the optical fiber 4, so as to realize the input and output of the optical signal. The optical fiber 4 is used as the medium for the transmission of the optical signal, and the receiving end 41 and the transmitting end 42 of the optical fiber 4 are respectively connected to the receiving connector 3 and the transmitting connector 2, so as to ensure that the optical signal can be efficiently and stably transmitted inside the optical module.

[0043] In this embodiment, the setting of the first inclined surface 211 can better match the transmission direction of the optical signal, reduce the reflection and scattering of light on the interface, and thus improve the transmission efficiency of the optical signal. Similar to the first inclined surface 211, the side of the second substrate 31 away from the main connector 1 is also designed as an inclined surface to optimize the reception effect of the optical signal. The V-groove 5 on the first substrate 21 and the second substrate 31 is an equiangular triangle structure, so that the outer wall of the optical fiber 4 can be tangent to the three sides of the V-groove 5, thereby stably fixing the optical fiber 4 to prevent it from displacement or shaking during transmission, thereby ensuring the stable transmission of the optical signal.

[0044] In this embodiment, during the production, after the core of the optical fiber 4 is fixed on the first substrate 21 and the second substrate 31, the negative fiber process is used to directly perform grinding and cutting, and the substrate and the core are ground to a specified angle together to ensure that the core has the same angle with the end face of the first substrate 21 and the end face of the second substrate 31. After the coupling test is passed, the cover plate (described below) is covered and completely cured and fixed with glue.

[0045] In this embodiment, based on the axial direction of the optical fiber 4, the first inclined surface 211 is inclined in a horizontal horizontal direction, and the second inclined surface 311 is inclined in a horizontal longitudinal direction. The first inclined surface 211 can more effectively guide the optical signal from the transmitting end 42 of the optical fiber 4 into the interior of the module, or accurately guide the optical signal inside the module to the transmitting end 42 of the optical fiber 4, and the second inclined surface 311 can more effectively capture the optical signal entering from the receiving end 41 of the optical fiber 4 and guide it to the sensitive surface of the receiving element. In this embodiment, the setting of the first inclined surface 211 and the second inclined surface 311 helps to reduce the reflection, scattering and polarization change of the optical signal inside the module, thereby improving the transmission performance and stability of the entire system.

[0046] In this embodiment, the first inclined surface 211 and the second inclined surface 311 have different inclination directions, which can better distinguish between transmission and reception, and realize efficient transmission and accurate alignment of optical signals during transmission and reception. In other embodiments, the first inclined surface 211 can be inclined along the horizontal longitudinal direction, the second inclined surface 311 can be inclined along the horizontal transverse direction, and other methods.

[0047] In this embodiment, the inclination angle of the first inclined surface 211 is ∠1, ∠1 is (5-10)°, in this embodiment, ∠1 is 8°±0.3°, which can better match the emission angle of the light emitting source or the optical element inside the module, and help reduce the loss of the optical signal during the transmission process, ensure the quality and intensity of the optical signal, ensure that the optical signal can be transmitted along the predetermined path after being emitted from the optical fiber 4 emission end 42, reduce unnecessary reflection and scattering, and improve the transmission efficiency of the optical signal. The inclination angle of the second inclined surface 311 is ∠2, ∠2 is (40-50)°, in this embodiment, ∠2 is 42°±0.3°, which can better match the sensitive surface direction of the receiving element (such as a photodetector) or the optical focusing system inside the module, ensure that the optical signal entering from the optical fiber 4 receiving end 41 can be accurately focused on the sensitive surface of the receiving element, can effectively improve the reception efficiency of the optical signal, help reduce the noise interference of the optical signal during the receiving process, improve the signal-to-noise ratio, and ensure the accuracy and reliability of the optical signal.

[0048] In this embodiment, a third inclined surface 11 is provided at the end of the main connector 1 away from the optical fiber 4. The inclination angle of the third inclined surface 11 is ∠3, and ∠3 is (5-10)°. In this embodiment, ∠3 is 8°±0.3°, which helps to achieve more precise axial alignment when the connectors are docked and reduce the optical signal loss caused by misalignment.

[0049] In this embodiment, the main connector 1 is provided with a cover 12, and the material of the cover 12 is PI material. The material is elastic and can effectively eliminate the assembly tolerance of the connector when it is assembled on the optical module. When used in the optical module and inserted into the outer shell and the adapter 17, it can absorb the design and assembly tolerances to ensure that the materials can be completely assembled normally. In addition, the PI material has extremely high high temperature resistance, good insulation and low moisture absorption. In other embodiments, the cover 12 can also be set to other materials with high elasticity.

[0050] In other embodiments, the cover 12 can be installed and fixed on the main connector 1 by various methods such as bonding, fitting, and snapping.

[0051] In this embodiment, a colored layer is sprayed on the surface of the optical fiber 4. In this embodiment, the surface of the optical fiber 4 is colored to distinguish four bands. The colors are distributed from the outside to the inside in brown, green, yellow, and blue. When the four-way light is coupled, the channel lines can be distinguished more intuitively and better. In other embodiments, the distinction can also be achieved by setting different labels on the surface of the optical fiber 4 and other methods.

[0052] In this embodiment, the transmitting connector 2 also includes a first cover plate 22, and the receiving connector 3 also includes a second cover plate 32. The first cover plate 22 and the second cover plate 32 both cover the V-groove 5 so that the V-groove 5 forms a V-shaped through groove. The first substrate 21, the first cover plate 22, and the transmitting end 42 are fixedly connected, and the second substrate 31, the second cover plate 32, and the receiving end 41 are fixedly connected to ensure the stability of the optical fiber 4 core installed in the V-groove 5, and to ensure that the three-sided tangential contact of the core will not shift after assembly, and can play a protective role. In this embodiment, the first substrate 21, the first cover plate 22, and the transmitting end 42 are assembled, and the second substrate 31, the second cover plate 32, and the receiving end 41 are assembled. They are all fixed with Forbidden City 3094 glue.

[0053] In this embodiment, the V-grooves 5 include a plurality of V-grooves 5, which are arranged side by side and evenly distributed in the center along the horizontal direction on the surface of the first substrate 21 and the surface of the second substrate 31, respectively. The sides of two adjacent V-grooves 5 on the first substrate 21 intersect, and there is a gap between two adjacent V-grooves 5 on the second substrate 31.

[0054] In this embodiment, the height of the transmitting connector 2 is set to H1, the height of the central axis of the optical fiber 4 from the top end surface of the first cover plate 22 is H2, H1:H2 is 1:(0.5-0.6), the width of the transmitting connector 2 is set to L1, the spacing between the central axes of two adjacent optical fibers 4 is L2, the spacing between the side wall of the transmitting connector 2 and the central axis of the optical fiber 4 close to the side wall is L3, L1:L2:L3 is 1:(0.09-0.1):(0.3-0.4). In this embodiment, H1:H2 is 1:0.515, and L1:L2:L3 is 1:0.092:0.36.

[0055] In this embodiment, the height of the receiving connector 3 is set to H3, the height of the central axis of the optical fiber 4 from the top end surface of the second cover plate 32 is H4, H3:H4 is 1:(0.1-0.2), the width of the receiving connector 3 is set to L4, the spacing between the central axes of two adjacent optical fibers 4 is L5, the spacing between the side wall of the transmitting connector 2 and the central axis of the optical fiber 4 close to the side wall is L6, L4:L5:L6 is 1:(0.1-0.3):(0.1-0.3). In this embodiment, H3:H4 is 1:0.155, and L4:L5:L6 is 1:0.2:0.2.

[0056] In this embodiment, the distribution of the V-grooves 5 in the transmitting connector 2 helps to stably fix and accurately align the optical fiber 4, focusing on improving data transmission efficiency and compactness, and the distribution of the V-grooves 5 in the receiving connector 3 focuses on optimizing signal reception performance and reducing light attenuation.

[0057] The utility model provides an optical path connector for an optical module, in which the V-groove 5 with an equiangular triangle structure is set to provide a stable supporting surface for the optical fiber 4, so that the optical fiber 4 is subjected to more uniform force when fixed in the V-groove 5 and is not easily damaged, and can reduce the offset and misalignment of the optical fiber 4 during the connection process, thereby ensuring the precise positioning of the optical fiber 4 in the connector, ensuring the stable transmission of the optical signal, enhancing the stability of the optical fiber 4 in the connector, and can effectively reduce the signal interruption or attenuation caused by poor connection, thereby improving the stability and reliability of the entire system; the setting of the first inclined surface 211 and the second inclined surface 311 contributes to the smooth transition of the optical fiber 4 during the connection process and reduces the attenuation and reflection of the optical signal.

[0058] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings of this specification, which are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0059] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. An optical path connector for an optical module, characterized in that: It includes a main connector, a transmitting connector, and a receiving connector. The main connector is electrically connected to an optical fiber. The optical fiber includes two groups. The two groups of optical fibers respectively include a receiving end and a transmitting end. The receiving end and the transmitting end are electrically connected to the receiving connector and the transmitting connector respectively. The transmitting connector comprises a first substrate, an end surface of the first substrate away from the main connector is set as a first inclined surface, and the transmitting end is flush with the end surface of the first inclined surface; The receiving connector comprises a second substrate, an end surface of the second substrate on one side away from the main connector is set as a second inclined surface, and the receiving end is flush with the end surface of the second inclined surface; The first substrate and the second substrate are both provided with V-grooves, the V-grooves are equiangular triangle structures, and the outer wall of the optical fiber is tangent to three sides of the V-grooves.

2. The optical path connector of an optical module according to claim 1, characterized in that: Based on the axial direction of the optical fiber, the first inclined surface is inclined along a horizontal transverse direction, and the second inclined surface is inclined along a horizontal longitudinal direction.

3. The optical path connector of an optical module according to claim 1, characterized in that: The inclination angle of the first inclined surface is ∠1, and ∠1 is (5-10)°. The inclination angle of the second inclined surface is ∠2, and ∠2 is (40-50)°.

4. The optical path connector of an optical module according to any one of claims 1 to 3, characterized in that: A third inclined surface is arranged at one end of the main connector away from the optical fiber, and the inclination angle of the third inclined surface is ∠3, and ∠3 is (5-10)°.

5. The optical path connector of an optical module according to any one of claims 1 to 3, characterized in that: The main connector is provided with a cover, and the material of the cover is PI material.

6. The optical path connector of an optical module according to any one of claims 1 to 3, characterized in that: The optical fiber surface is sprayed with a colored layer.

7. The optical path connector of an optical module according to any one of claims 1 to 3, characterized in that: The transmitting connector also includes a first cover plate, and the receiving connector also includes a second cover plate. The first cover plate and the second cover plate both cover the V-groove. The first substrate, the first cover plate, and the transmitting end are fixedly connected, and the second substrate, the second cover plate, and the receiving end are fixedly connected.

8. The optical path connector of an optical module according to any one of claims 1 to 3, characterized in that: There are multiple V-grooves, which are arranged side by side and evenly distributed in the center on the first substrate surface and the second substrate surface in the horizontal direction. The sides of two adjacent V-grooves on the first substrate intersect, and there is a gap between two adjacent V-grooves on the second substrate.

9. The optical path connector of an optical module according to claim 8, characterized in that: The height of the transmitting connector is set to H1, the height of the central axis of the optical fiber from the top end face of the first cover plate is H2, H1:H2 is 1:(0.5-0.6), the width of the transmitting connector is set to L1, the spacing between the central axes of two adjacent optical fibers is L2, the spacing between the side wall of the transmitting connector and the central axis of the optical fiber close to the side wall is L3, L1:L2:L3 is 1:(0.09-0.1):(0.3-0.4).

10. The optical path connector of an optical module according to claim 9, characterized in that: The height of the receiving connector is set to H3, the height of the central axis of the optical fiber from the top end face of the second cover plate is H4, H3:H4 is 1:(0.1-0.2), the width of the receiving connector is set to L4, the spacing between the central axes of two adjacent optical fibers is L5, the spacing between the side wall of the transmitting connector and the central axis of the optical fiber close to its side wall is L6, L4:L5:L6 is 1:(0.1-0.3):(0.1-0.3).

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