MPO pre-terminated optical cable

Abstract

The utility model discloses an MPO pre-terminated optical cable, which comprises a branch part and a merging part, the branch part comprises a first optical fiber unit and a second optical fiber unit, the first optical fiber unit comprises a first branch sheath, the first branch sheath is provided with a plurality of first optical fibers, the second optical fiber unit comprises a second branch sheath, the second branch sheath is provided with a plurality of second optical fibers, and the merging part is provided with a plurality of second optical fibers. The joint of the first branch sheath and the second branch sheath is provided with a tearing groove. The merging part comprises a merging end sheath; the plurality of first optical fibers and the plurality of second optical fibers are merged and extend into the merging end sheath; a first connector is arranged at the end part of the first optical fiber unit, a second connector is arranged at the end part of the second optical fiber unit, a third connector is arranged at the end part of the merging part, and the third connector is connected with the first optical fiber and the second optical fiber. The tearing groove of the branch part is easy to separate the first optical fiber unit from the second optical fiber unit, the branch lengths of the first optical fiber unit and the second optical fiber unit are adjusted, different field use requirements are met, and the wiring efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiber optic cabling in data centers, and particularly relates to an MPO pre-terminated optical cable. Background Art

[0002] With the continuous growth of data traffic, in order to meet the development needs of intelligent computing and supercomputing centers, the development of network technology has become a key link. For high-speed interconnection between nodes and improving the training and inference efficiency of intelligent computing services, 400G / 800G is required to meet the needs of large models, which has greatly promoted the standardization of 400G and 800G and promoted the industry to make technical reserves for 1.6T, thus providing a huge stage for products such as high-performance fiber optic cables and high-density connectors. Different rates determine different interfaces for active devices such as switches and cabling products, such as duplex LC interfaces, MPO / MTP interfaces, etc.

[0003] In data center fiber optic cabling products, the 16-core MPO to 2*8-core MPO fiber optic jumper is mainly used for connection and conversion between ports with different rates. Currently, for a similar 16-core MPO to 2*8-core MPO fiber optic jumper, one end is a 16-core optical cable with a diameter of about 3.5 mm. The end of the 16-core optical cable is connected to a 16-core MPO optical cable connector. The other end is two 8-core optical cables. The end of each 8-core optical cable is connected to an 8-core MPO optical cable connector. The 8-core optical cable is formed by stripping the outer sheath of the 16-core optical cable and re-threading a sleeve for every 8 cores. The sleeve provides isolation protection for the 8-core optical cable. Although this method realizes the production of the 16-core MPO to 2*8-core MPO fiber optic jumper, the length of the sleeve threaded through the 8-core optical cable is limited, generally only able to thread a length within 3 meters. When the length exceeds 3 meters, the difficulty of threading the sleeve greatly increases, and it is easy to cause damage to the optical cable. Moreover, the sleeves of the two 8-core optical cables are relatively independent, and the branch length between them cannot be adjusted according to the on-site working conditions. When the two separated 8-core optical cables are needed, they also need to be bundled and fixed with cable ties. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an MPO pre-terminated optical cable, the branch length of which can be adjusted according to the on-site situation, facilitating cross-cabinet use and improving cabling efficiency.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0006] An MPO pre-terminated optical cable includes a branching portion and a merging portion. The branching portion includes a first optical fiber unit and a second optical fiber unit. The first optical fiber unit includes a first branch sheath, and a plurality of (not less than 2) first optical fibers are arranged in the first branch sheath. The second optical fiber unit includes a second branch sheath, and a plurality of (not less than 2) second optical fibers are arranged in the second branch sheath. A tear groove is provided at the connection of the first branch sheath and the second branch sheath, and the tear groove facilitates the separation of the first optical fiber unit and the second optical fiber unit.

[0007] The merging portion includes a merging end sheath, and a plurality of first optical fibers in the first branch sheath and a plurality of second optical fibers in the second branch sheath merge and extend into the merging end sheath.

[0008] A first connector is provided at the end of the first optical fiber unit, and the first connector connects the first optical fibers. A second connector is provided at the end of the second optical fiber unit, and the second connector connects the second optical fibers. A third connector is provided at the end of the merging portion, and the third connector connects the first optical fibers and the second optical fibers.

[0009] The first branch sheath and the second branch sheath form an 8-shaped structure, and the 8-shaped structure facilitates the separation of the first optical fiber unit and the second optical fiber unit.

[0010] The tear groove includes a first tear groove and a second tear groove. The first tear groove is located on one side of the connection, and the second tear groove is located on the other side of the connection.

[0011] The first branch sheath and the second branch sheath are of an integral structure.

[0012] The first branch sheath is provided with a first aramid fiber, and the second branch sheath is provided with a second aramid fiber.

[0013] A protection component is provided at the connection between the branching portion and the merging portion. The protection component is used to protect the connection between the branching portion and the merging portion to avoid damaging the optical fibers.

[0014] There are 8 first optical fibers, and 8 second optical fibers. The first connector is a first 8-core connector, and the first 8-core connector connects 8 first optical fibers. The second connector is a second 8-core connector, and the second 8-core connector connects 8 second optical fibers. The third connector is a 16-core connector, and the third connector connects 8 first optical fibers and 8 second optical fibers.

[0015] The first connector and / or the second connector and / or the third connector is an MPO connector or an MTP connector or other multi-core connectors.

[0016] The tear slots of the branch portion of the present utility model facilitate the separation of the first optical fiber unit and the second optical fiber unit, adjust the branch lengths of the first optical fiber unit and the second optical fiber unit, meet different on-site usage requirements, and improve the wiring efficiency.

[0017] The branch length of the branch portion of the present utility model can not only be applicable to short-distance usage scenarios but also to long-distance cross-rack usage scenarios, improving the applicable range of the MPO pre-terminated optical cable. Brief Description of the Drawings

[0018] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0019] Figure 1 It is a schematic structural diagram of the present utility model.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the branch portion of the present utility model. Specific Embodiments

[0021] As Figure 1-2 shown, an MPO pre-terminated optical cable includes a branch portion and a merging portion. The branch portion includes a first optical fiber unit 1 and a second optical fiber unit 2. The first optical fiber unit 1 includes a first branch sheath 11. The first branch sheath 11 is provided with 8 first optical fibers 12 and a first aramid 13. The second optical fiber unit 2 includes a second branch sheath 21. The second branch sheath 21 is provided with 8 second optical fibers and a second aramid 23. The first branch sheath 11 and the second branch sheath 21 are of an integral structure. A tear slot is provided at the connection between the first branch sheath 11 and the second branch sheath 21. The tear slot includes a first tear slot 71 and a second tear slot 72. The first tear slot 71 and the second tear slot are respectively located on both sides of the connection, so that the first branch sheath and the second branch sheath form an 8-shaped structure.

[0022] As a forming method of the integral structure, the first branch sheath 11 and the second branch sheath 21 can be integrally formed by an extrusion method.

[0023] The merging portion includes a merging end sheath. The 8 first optical fibers 12 in the first branch sheath 11 and the 8 second optical fibers 22 in the second branch sheath 21 are merged and extended into the merging end sheath. The merging end sheath protects the merged 8 first optical fibers 12 and 8 second optical fibers 22.

[0024] At the end of the first optical fiber unit 1, a first 8-core MPO connector 61 is provided. The first 8-core MPO connector 61 is connected to 8 first optical fibers. At the end of the second optical fiber unit 2, a second 8-core MPO connector 62 is provided. The second 8-core MPO connector 62 is connected to 8 second optical fibers. At the end of the merging part, a third connector 3 is provided. The third connector 3 is a 16-core MPO connector, and the 16-core MPO connector is connected to 8 first optical fibers and 8 second optical fibers.

[0025] A protection component 4 is provided at the junction between the branching part and the merging part. The protection component 4 is used to protect the junction between the branching part and the merging part to avoid damaging the optical fibers. As a specific implementation manner of the protection component, the protection component can adopt a heat shrinkable tube or a heat shrinkable tube with glue or other protection casings.

[0026] As another embodiment, both the first optical fiber and the second optical fiber can be set to other numbers to be applicable to other core number usage scenarios.

[0027] As another embodiment, the above connector can be an MTP connector or other multi-core connectors.

[0028] The above embodiments do not limit the present invention in any way. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An MPO pre-terminated optical cable, characterized in that, It includes a branching part and a merging part. The branching part includes a first optical fiber unit and a second optical fiber unit. The first optical fiber unit includes a first branching sheath, and multiple first optical fibers are arranged in the first branching sheath. The second optical fiber unit includes a second branching sheath, and multiple second optical fibers are arranged in the second branching sheath. A tearing groove is provided at the connection of the first branching sheath and the second branching sheath. The merging part includes a merging end sheath, and multiple first optical fibers in the first branching sheath and multiple second optical fibers in the second branching sheath merge and extend into the merging end sheath. A first connector is provided at the end of the first optical fiber unit, and the first connector connects the first optical fibers. A second connector is provided at the end of the second optical fiber unit, and the second connector connects the second optical fibers. A third connector is provided at the end of the merging part, and the third connector connects the first optical fibers and the second optical fibers.

2. The MPO pre-terminated optical cable according to claim 1, wherein, The first branching sheath and the second branching sheath form an 8-shaped structure.

3. An MPO pre-terminated optical cable according to claim 1, characterized in that, The tearing groove includes a first tearing groove and a second tearing groove. The first tearing groove is located on one side of the connection, and the second tearing groove is located on the other side of the connection.

4. The MPO pre-terminated optical cable according to claim 1, wherein, The first branching sheath and the second branching sheath are of an integral structure.

5. The MPO pre-terminated optical cable according to claim 1, wherein, The first branching sheath is provided with a first aramid fiber, and the second branching sheath is provided with a second aramid fiber.

6. The MPO pre-terminated optical cable according to claim 1, characterized in that, A protection component is provided at the connection between the branching part and the merging part.

7. The MPO pre-terminated optical cable according to claim 1, characterized in that, There are 8 first optical fibers, and 8 second optical fibers. The first connector is a first 8-core connector, and the first 8-core connector connects 8 first optical fibers. The second connector is a second 8-core connector, and the second 8-core connector connects 8 second optical fibers. The third connector is a 16-core connector, and the third connector connects 8 first optical fibers and 8 second optical fibers.

8. The MPO pre-terminated optical cable according to claim 1, wherein, The first connector and / or the second connector and / or the third connector is an MPO connector or an MTP connector.

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