CN212749317U - Optical connection module - Google Patents

Abstract

The application discloses optical connection module includes: the substrate comprises a first end and a second end which are oppositely arranged; the optical waveguide fiber core group comprises a plurality of optical waveguide fiber cores, the number of the optical waveguide fiber core groups is multiple, and the multiple optical waveguide fiber core groups are arranged on the substrate in different layers, wherein the optical waveguide fiber cores in the multiple optical waveguide fiber core groups all extend from the first end to the second end of the substrate, at least part of the multiple optical waveguide fiber core groups are overlapped in the vertical projection on the surface of the substrate at the first end of the substrate, and the multiple optical waveguide fiber core groups are not overlapped in the vertical projection on the surface of the substrate at the second end of the substrate; and the cladding wraps the multiple groups of optical waveguide fiber core groups. The optical connection module provided by the application can meet the requirements of different application scenes.

Description

Optical connection module

Technical Field

The present application relates to the field of optical transmission technologies, and in particular, to an optical connection module.

Background

With the development of cloud computing and big data, the requirements on various communication modules are higher and higher, and therefore communication products such as modules, equipment and the like with higher speed, smaller volume and lower cost are needed.

The inventor of this application finds that at present, in the butt joint of communication product, the volume of connecting the module has restricted the development of communication product, consequently urgently needs small, with low costs, the assembly is simple, the high connection module of reliability. The polymer waveguide connecting module has the advantages of small volume, mass production, low production cost, stability, reliability, suitability for mass production and the like, and completely accords with the development trend of the current connecting module.

SUMMERY OF THE UTILITY MODEL

The main technical problem who solves of this application provides an optical connection module, can satisfy the demand under the different application scenes.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided an optical connection module including: the substrate comprises a first end and a second end which are oppositely arranged; the optical waveguide fiber core groups comprise a plurality of optical waveguide fiber cores, the number of the optical waveguide fiber core groups is multiple, and the multiple optical waveguide fiber core groups are arranged on the substrate in different layers, wherein the optical waveguide fiber cores in the multiple optical waveguide fiber core groups all extend from the first end to the second end of the substrate, at least part of the multiple optical waveguide fiber core groups are overlapped in the vertical projection of the surface of the substrate at the first end of the substrate, and the multiple optical waveguide fiber core groups are not overlapped in the vertical projection of the surface of the substrate at the second end of the substrate; and the cladding wraps the multiple groups of optical waveguide fiber core groups.

The beneficial effect of this application is: the optical connection module in this application sets up the different layers of multiunit optical waveguide fiber core group on the one hand to under the condition that there is the restriction in the width of base plate, can satisfy the requirement to the quantity of optical waveguide fiber core group under the different application scenes, on the other hand sets up multiunit optical waveguide fiber core group and compares at the first end of base plate more dispersion at the second end of base plate, can adapt to the interface that has different intervals under the different application scenes.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic diagram of an internal structure of an embodiment of an optical interconnect module according to the present application;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic diagram of the internal structure of another embodiment of an optical interconnect module according to the present application;

FIG. 5 is a schematic cross-sectional view taken along line C-C of FIG. 4;

FIG. 6 is a schematic cross-sectional view taken along line D-D of FIG. 1;

FIG. 7 is a schematic view of the internal structure of another embodiment of the optical interconnect module of the present application;

FIG. 8 is a schematic cross-sectional view taken along the line E-E in FIG. 4;

FIG. 9 is a schematic sectional view taken along the direction F-F in FIG. 1;

FIG. 10 is a schematic cross-sectional view of the optical interconnect module of FIG. 1 along the A-A direction in an application scenario;

FIG. 11 is a schematic cross-sectional view of the optical interconnect module of FIG. 1 along the A-A direction in another application scenario;

FIG. 12 is a schematic cross-sectional view of the optical interconnect module of FIG. 1 along the A-A direction in another application scenario;

FIG. 13 is a schematic cross-sectional view of the optical interconnect module of FIG. 1 along the A-A direction in another exemplary application scenario;

FIG. 14 is a schematic cross-sectional view of the optical interconnect module of FIG. 1 along the A-A direction in another application scenario;

FIG. 15 is a schematic cross-sectional view of the optical interconnect module of FIG. 1 along the A-A direction in another application scenario.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 3, fig. 1 is a schematic diagram illustrating an internal structure of an optical connection module according to an embodiment of the present invention, fig. 2 is a schematic diagram illustrating a cross-sectional structure taken along a direction a-a in fig. 1, and fig. 3 is a schematic diagram illustrating a cross-sectional structure taken along a direction B-B in fig. 1. In this embodiment, the optical connection module 100 plays a role of connection, and is used for implementing the docking of communication products, and specifically includes: substrate 110, optical waveguide core assembly 120, cladding 130, and connectors 140.

The substrate 110 includes a first end 111 and a second end 112 disposed opposite to each other, which mainly serve as a support. In one application scenario, the substrate 110 is a flexible substrate made of polyimide or polyester film, and in another application scenario, the substrate 110 is made of a transparent material, so that the structure inside the substrate 110 can be seen from the outside.

The optical waveguide core groups 120 are disposed on the substrate 110 in a plurality of groups, and each group of optical waveguide core groups 120 includes a plurality of optical waveguide cores 121, for example, 2, 4, 8 or more optical waveguide cores 121, and the optical waveguide cores 121 are made of polymer and can transmit optical signals. Wherein, two ends of each optical waveguide fiber core group 120 are respectively connected with different communication products for realizing optical signal transmission between the communication products.

The cladding 130 surrounds the plurality of optical waveguide fiber core groups 120, and the cladding 130 specifically includes an upper cladding (not shown) and a lower cladding (not shown), and in an application scenario, the material of the cladding 130 is a transparent material.

In the present embodiment, the plurality of optical waveguide core sets 120 are disposed on the substrate 110 in different layers, wherein the optical waveguide cores 121 of the plurality of optical waveguide core sets 120 all extend from the first end 111 to the second end 112 of the substrate 110, and at the first end 111 of the substrate 110, at least a part of the plurality of optical waveguide core sets 120 overlap in vertical projection on the surface of the substrate 110, while at the second end 112 of the substrate 110, the plurality of optical waveguide core sets 120 do not overlap in vertical projection on the surface of the substrate 110.

That is, the plurality of optical waveguide fiber core groups 120 overlap at the first end 111 of the substrate 110 in the thickness direction of the substrate 110, and do not overlap at the second end 112 of the substrate 110, that is, the plurality of optical waveguide fiber core groups 120 are more dispersed at the second end 112 of the substrate 110 than at the first end 111 in the width direction of the substrate 110.

Because the end of the multiple groups of optical waveguide fiber cores 120 located at the second end 112 of the substrate 110 may need to be butted with different interfaces, and the distances between different interfaces may be different in different application scenarios, the present embodiment arranges that the multiple groups of optical waveguide fiber cores 120 are more dispersed at the second end 112 of the substrate 110 than at the first end 111, so that the dispersion degree of the multiple groups of optical waveguide fiber cores 120 at the second end 112 can be adjusted to meet the requirements in different application scenarios; meanwhile, the plurality of groups of optical waveguide fiber core groups 120 are arranged on the substrate 110 in different layers, and the requirement on the number of the optical waveguide fiber core groups 120 in different application scenes can be met under the condition that the width of the substrate 110 is limited.

In one application scenario, as shown in fig. 1, the first end 111 of the substrate 110 has a smaller width than the second end 112.

With reference to fig. 1, the first end 111 of the substrate 110 is fixedly connected to the connector 140, and the connection module 100 is configured to be fixedly connected to the connector 140, so as to be capable of being connected to a communication product.

The connector 140 is axially disposed in a hollow structure, and the first end 111 of the substrate 110 at least partially axially extends into and is fixed in the connector 140, and referring to fig. 3, an opening 141 is disposed on a sidewall of the connector 140 facing the surface of the substrate 110, so that glue can flow into the connector 140 from the opening 141 to fix the first end 111 of the substrate 110.

Specifically, during the assembly process, after the first end 111 of the substrate 110 is inserted into the connection head 140 along the axial direction, glue is dropped from the opening 141 into the connection head 140, so as to fixedly connect the connection head 140 and the substrate 110.

In the prior art, the connector 140 is generally divided into a base and an upper cover, when assembling, the first end 111 of the substrate 110 is placed and fixed on the base, and then the upper cover is mounted on the base, the whole process involves two parts, the assembling steps are complex, the opening 141 is arranged on the side wall of the connector 140, only one part can be involved in the assembling process, the assembling steps are simple, and the assembling efficiency can be improved.

With reference to fig. 3, in order to prevent the substrate 110 from being inserted into the opening 141 during the process of inserting the substrate 110 into the connecting head 140, the width of the opening 141 is smaller than the width of the first end 111 of the substrate 110 along the radial direction of the connecting head 140.

Meanwhile, the connector 140 is provided with two positioning through holes 142 along the axial direction, and in an application scenario, the number of the positioning through holes 142 is two, so that the connector is convenient to be positioned and butted with a communication product.

In an application scenario, the connector 140 is an MT ferrule.

With continued reference to fig. 1-3, to simplify the fabrication process, the plurality of optical waveguide cores 121 in each group of optical waveguide cores 120 are located in the same layer in the cladding 130, such that the optical waveguide cores 121 in the same group of optical waveguide cores 120 are all located in the same layer in the cladding 130.

In other embodiments, the plurality of optical waveguide cores 121 in each group of optical waveguide core groups 120 may also be disposed in different layers in the cladding 130, for example, when there is a requirement for limiting the width of the first end 111 of the substrate 110, the plurality of optical waveguide cores 121 in each group of optical waveguide core groups 120 are disposed in different layers in the cladding 130, and at the first end 111 of the substrate 110, at least part of the plurality of optical waveguide cores 121 in each group of optical waveguide core groups 120 overlap in the vertical projection on the surface of the substrate 110, while at the second end 112 of the substrate 110, the plurality of optical waveguide cores 121 in each group of optical waveguide core groups 120 do not overlap in the vertical projection on the surface of the substrate 110, and at this time, the width of the first end 111 of the substrate 110 may be further reduced.

With continued reference to fig. 1 to 3, to simplify the manufacturing process, the plurality of optical waveguide cores 121 in each set of optical waveguide core groups 120 are disposed in parallel at the first end 111 and the second end 112 of the substrate 110, respectively.

With continued reference to fig. 1-3, adjacent sets of optical waveguide cores 120 disposed in the same layer are spaced apart at the second end 112 of the substrate 110 by a greater distance than at the first end 111 of the substrate 110.

Specifically, the arrangement can further increase the dispersion degree of the multiple groups of optical waveguide fiber cores 120 at the second end 112 of the substrate 110, and the interval between the adjacent optical waveguide fiber cores 120 at the second end 112 of the substrate 110 can be adjusted to meet the requirement corresponding to different interfaces.

Meanwhile, in the embodiment of fig. 1 to 3, the plurality of optical waveguide core groups 120 are arranged in two layers in the substrate 110, the number of optical waveguide cores 121 included in each optical waveguide core group 120 is the same, the vertical projections of the upper and lower optical waveguide core groups 120 are completely overlapped at the first end 111 of the substrate 110, the vertical projections of the upper and lower optical waveguide core groups 120 are not overlapped at the second end 112 of the substrate 110, and the interval of the adjacent optical waveguide core groups 120 arranged in the same layer at the second end 112 of the substrate 110 is greater than the interval at the first end 111 of the substrate 110.

In the above embodiment, the optical signals in the plurality of optical waveguide cores 121 in each set of optical waveguide core groups 120 are transmitted in the same direction, that is, one set of optical waveguide core groups 120 can only transmit optical signals from the first end 111 to the second end 112 of the substrate 110 or transmit optical signals from the second end 112 to the first end 111 of the substrate 110.

Referring to fig. 4 to 6, this embodiment is different from the above embodiments in that the optical signals in the plurality of optical waveguide cores 121 in each group of optical waveguide cores 120 are transmitted in different directions, and when a part of the optical waveguide cores 121 in one group of optical waveguide cores 120 transmits the optical signals from the first end 111 to the second end 112 of the substrate 110, and another part transmits the optical signals from the second end 112 to the first end 111 of the substrate 110, the group of optical waveguide cores 120 can simultaneously complete the transmission and reception of the optical signals.

When there is a requirement for the number of optical waveguide cores 121 used for transmitting optical signals in the same direction in each group of optical waveguide cores 120, in the embodiment of fig. 6, each group of optical waveguide cores 120 includes twice the number of optical waveguide cores 121 as in the embodiment of fig. 3, for example, each group of optical waveguide cores 120 includes 4 optical waveguide cores 121 in fig. 3, and each group of optical waveguide cores 120 includes 8 optical waveguide cores 121 in fig. 6.

Referring to fig. 7 to 9, unlike the two embodiments, a notch 1121 is formed between the adjacent optical waveguide fiber core groups 120 at the second end 112 of the substrate 110.

Specifically, the notch 1121 is disposed so that each group of optical waveguide fiber cores 120 can be individually and flexibly butted with an independent optical connector, thereby meeting the requirements of different application scenarios.

Meanwhile, to avoid tearing, an end edge of the notch 1121, which is away from the second end 112 of the substrate 110, is curved. Of course, in other embodiments, an end edge of the cut 1121, which is away from the second end 112 of the substrate 110, may have other shapes, such as a wave shape, a straight shape, a zigzag shape, and the like, which is not limited herein.

Meanwhile, in the embodiments of fig. 7 to 9, the optical signals in the plurality of optical waveguide cores 121 in each group of optical waveguide cores 120 are transmitted in different directions, and in this case, each group of optical waveguide cores 120 can transmit the optical signals from the first end 111 to the second end 112 of the substrate 110 and can also transmit the optical signals from the second end 112 to the first end 111.

Meanwhile, in the present application, the substrate 110 and the cladding 130 have various positional relationships, taking the embodiment of fig. 1 as an example, in one application scenario, as shown in fig. 2, the cladding 130 is disposed in the substrate 110, and at this time, the substrate 110 wraps the cladding 130, which belongs to a full-cladding structure, in another application scenario, as shown in fig. 10, one side surface of the cladding 130 is exposed from the substrate 110, and the other surface is in contact with the substrate 110, which belongs to a half-cladding structure, and in yet another application scenario, as shown in fig. 11, the substrate 110 and the cladding 130 are stacked.

In summary, the present application does not limit the positional relationship between the substrate 110 and the cladding 130.

With continued reference to fig. 1, 4 and 7, in order to position the optical waveguide cores 121 during the manufacturing process and to assemble the optical connection module 100 without using other equipment, the second end 112 of the substrate 110 can be abutted with a communication product to achieve passive coupling, and at least one positioning mark 1121 is disposed adjacent to the second end 112 of the substrate 110.

The positioning mark 1121 may be a circle, a cross, a square, or other shapes, which are not limited herein. In an application scenario, when the positioning mark 1121 is circular, the size radius of the positioning mark 1121 is 1 um.

The positioning mark 1121 may be located on the surface of the substrate 110, or on the surface of the cladding 130, or disposed in the cladding 130 at the same layer as the optical waveguide core group 120.

Taking the embodiment of fig. 1 as an example, in one application scenario, as shown in fig. 2 and fig. 10, the positioning mark 1121 is located on the surface of the substrate 110, in another application scenario, as shown in fig. 11, the positioning mark 1121 is located on the surface of the cladding 130, and in another application scenario, as shown in fig. 12, fig. 13, fig. 14 and fig. 15, the positioning mark 1121 and the optical waveguide fiber core group 120 are disposed in the same layer in the cladding 130, wherein, when the positioning mark 1121 and the optical waveguide fiber core group 120 are disposed in the same layer in the cladding 130, the positioning mark 1121 and the optical waveguide fiber core group 120 can be simultaneously manufactured in the manufacturing process, and compared with the positioning mark 1121 located on the surface of the substrate 110/the cladding 130, the subsequent positioning can be saved, and the manufacturing accuracy can be improved.

Meanwhile, as shown in fig. 14 and fig. 15, when the plurality of optical waveguide fiber core groups 120 are divided into two layers in the substrate 110, the positioning mark 1121 may be disposed in the cladding 130 at the same layer as the upper optical waveguide fiber core group 120 or at the same layer as the lower optical waveguide fiber core group 120, which is not limited in the present application.

The positioning mark 1121 may be prepared by a laser dotting method, an etching method, or other methods, which are not limited herein.

It should be noted that, the above embodiment and fig. 1 to 9 are described by dividing the plurality of optical waveguide fiber core groups 120 into two layers in the substrate 110, but the application does not limit the number of layers of the optical waveguide fiber core groups 120 in the substrate 110, and the optical waveguide fiber core groups may be arranged in three, four, or more layers, and at the first end 111 of the substrate 110, the vertical projections of the optical waveguide fiber core groups 120 of different layers may be completely overlapped (as shown in fig. 3, 6, and 9), or only overlapped portions, and the description is not limited herein.

In summary, the optical connection module in this application sets up the different layers of multiunit optical waveguide fiber core group on the one hand to under the condition that there is the restriction in the width of base plate, can satisfy the requirement to the quantity of optical waveguide fiber core group under the different application scenarios, on the other hand sets up multiunit optical waveguide fiber core group and compares at the first end of base plate at the second end of base plate and disperses more, can adapt to the interface that has different intervals under the different application scenarios.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. An optical interconnect module comprising:

the substrate comprises a first end and a second end which are oppositely arranged;

the optical waveguide fiber core groups comprise a plurality of optical waveguide fiber cores, the number of the optical waveguide fiber core groups is multiple, and the multiple optical waveguide fiber core groups are arranged on the substrate in different layers, wherein the optical waveguide fiber cores in the multiple optical waveguide fiber core groups all extend from the first end to the second end of the substrate, at least part of the multiple optical waveguide fiber core groups are overlapped in the vertical projection of the surface of the substrate at the first end of the substrate, and the multiple optical waveguide fiber core groups are not overlapped in the vertical projection of the surface of the substrate at the second end of the substrate;

and the cladding wraps the multiple groups of optical waveguide fiber core groups.

2. The optical interconnect module of claim 1 wherein said plurality of optical waveguide cores in each of said groups of optical waveguide cores are located in the same layer of said cladding.

3. The optical interconnect module of claim 1 wherein the plurality of optical waveguide cores in each set of optical waveguide cores are disposed in parallel at the first end and the second end of the substrate, respectively.

4. The optical connection module of claim 1, wherein adjacent sets of optical waveguide cores disposed in the same layer are spaced further apart at the second end of the substrate than at the first end of the substrate.

5. The optical interconnect module of claim 1 wherein the optical signal transmission directions in the plurality of optical waveguide cores in each set of optical waveguide cores are the same or different.

6. The optical connection module of claim 1, wherein a slit is provided between adjacent sets of optical waveguide cores at the second end of the substrate.

7. The optical interconnect module of claim 6 wherein an end edge of the slit distal from the second end of the substrate is curved.

8. The optical interconnect module of claim 1 further comprising:

the connector sets up to hollow structure along the axial, the base plate first end is at least partly followed the axial stretches into and fixes in the connector, wherein, the connector orientation be equipped with the opening on the lateral wall on base plate surface, for glue certainly the opening flows in the connector and fixed the base plate first end.

9. The optical interconnect module of claim 8, wherein the cladding layer is disposed in the substrate, or one side surface of the cladding layer is exposed from the substrate, or the substrate and the cladding layer are stacked.

10. The optical interconnect module of claim 9, wherein the optical interconnect module is provided with at least one positioning mark adjacent to the second end of the substrate, and the positioning mark is located on a surface of the substrate or the cladding, or the positioning mark and the optical waveguide core group are disposed in the cladding in the same layer.

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