MPO pre-terminated optical cable

Abstract

An MPO pre-terminated optical cable disclosed by the present invention 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, 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 facilitates separation of the first optical fiber unit and 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 invention belongs to the technical field of optical fiber wiring in data centers, and in particular relates to an MPO pre-terminated optical cable. Background Art

[0002] As data traffic continues to grow, in order to meet the development needs of intelligent computing and supercomputing centers, the development of network technology has become a key link. High-speed interconnection between nodes improves the training and reasoning efficiency of intelligent computing services. Only 400G / 800G can 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 optical fiber cables and high-density connectors. Different speeds determine that the interfaces of active devices such as switches and wiring products are different, such as duplex LC interfaces, MPO / MTP interfaces, etc.

[0003] The 16-core MPO to 2*8-core MPO fiber optic patch cord in the data center fiber optic cabling products is mainly used for connection and conversion between ports with different speeds. At present, similar 16-core MPO to 2*8-core MPO fiber optic patch cords have a 16-core optical cable with a diameter of about 3.5mm at one end, and the end of the 16-core optical cable is connected to a 16-core MPO cable connector, and the other end is two 8-core optical cables, each of which is connected to an 8-core MPO cable connector. The 8-core optical cable is made by stripping the outer sheath of the 16-core optical cable and re-inserting the casing for each 8 cores, which isolates and protects the 8-core optical cable. Although this method can realize the production of 16-core MPO to 2*8-core MPO fiber optic patch cord, the length of the casing for the 8-core optical cable is limited, and generally can only be worn within 3 meters. The difficulty of wearing the casing exceeding 3 meters is greatly increased, which can easily cause damage to the optical cable. Moreover, the casings 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. The two separated 8-core optical cables need to be tied and fixed with the help of cable ties when necessary. Summary of the invention

[0004] The object of the present invention is to provide an MPO pre-terminated optical cable, the branch length of which can be adjusted according to on-site conditions, so as to facilitate cross-cabinet use and improve wiring efficiency.

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

[0006] An MPO pre-terminated optical cable comprises a branching portion and a merging portion, wherein the branching portion comprises a first optical fiber unit and a second optical fiber unit, wherein the first optical fiber unit comprises a first branch sheath, wherein the first branch sheath is provided with a plurality of (not less than 2) first optical fibers, wherein the second optical fiber unit comprises a second branch sheath, wherein the second branch sheath is provided with a plurality of (not less than 2) second optical fibers, and a tearing groove is provided at the connection between the first branch sheath and the second branch sheath, wherein the tearing groove facilitates separation of the first optical fiber unit and the second optical fiber unit.

[0007] The merging portion comprises 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 are merged and extended into the merging end sheath.

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

[0009] The first branch sheath and the second branch sheath form an 8-shaped structure, and the 8-shaped structure makes it easy to separate the first optical fiber unit and the second optical fiber unit.

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

[0011] The first branch sheath and the second branch sheath are an integrated 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 branch part and the merging part, and the protection component is used to protect the connection between the branch part and the merging part to avoid damaging the optical fiber.

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

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

[0016] The tearing groove of the branch portion of the present invention facilitates the separation of the first optical fiber unit and the second optical fiber unit, adjusts the branch lengths of the first optical fiber unit and the second optical fiber unit, is suitable for different on-site use requirements, and improves wiring efficiency.

[0017] The branch length of the branch part of the present invention is not only applicable to short-distance usage scenarios, but also to long-distance cross-cabinet usage scenarios, thereby improving the application scope of the MPO pre-terminated optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the branch portion of the present invention. DETAILED DESCRIPTION

[0021] like Figure 1-2 As shown, an MPO pre-terminated optical cable includes a branching portion and a merging portion, the branching 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 fiber 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 fiber 23, the first branch sheath 11 and the second branch sheath 21 are an integrated structure, a tear groove is provided at the connection between the first branch sheath 11 and the second branch sheath 21, the tear groove includes a first tear groove 71 and a second tear groove 72, the first tear groove 71 and the second tear groove 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 molding method of the integrated structure, the first branch sheath 11 and the second branch sheath 21 can be integrally molded by extrusion.

[0023] The merging portion includes a merging end sheath. The eight first optical fibers 12 in the first branch sheath 11 and the eight 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 eight first optical fibers 12 and eight second optical fibers 22.

[0024] A first 8-core MPO connector 61 is provided at the end of the first optical fiber unit 1, and the first 8-core MPO connector 61 connects the 8 first optical fibers. A second 8-core MPO connector 62 is provided at the end of the second optical fiber unit 2, and the second 8-core MPO connector 62 connects the 8 second optical fibers. A third connector 3 is provided at the end of the merging portion, and the third connector 3 is a 16-core MPO connector, which connects the 8 first optical fibers and the 8 second optical fibers.

[0025] The connection between the branch part and the merging part is provided with a protection component 4, and the protection component 4 is used to protect the connection between the branch part and the merging part to avoid damaging the optical fiber. As a specific implementation of the protection component, the protection component can be a heat shrink tube or a heat shrink tube with glue or other protective shell.

[0026] As other embodiments, the first optical fiber and the second optical fiber may be set to other numbers to be applicable to usage scenarios with other core numbers.

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

[0028] The above embodiments do not limit the present invention in any way, and any technical solutions obtained by 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: The invention comprises a branching part and a merging part, wherein the branching part comprises a first optical fiber unit and a second optical fiber unit, wherein the first optical fiber unit comprises a first branch sheath, wherein the first branch sheath is provided with a plurality of first optical fibers, wherein the second optical fiber unit comprises a second branch sheath, wherein the second branch sheath is provided with a plurality of second optical fibers, and a tearing groove is provided at the connection between the first branch sheath and the second branch sheath; wherein the merging part comprises a merging end sheath, wherein the plurality of first optical fibers in the first branch sheath and the plurality of second optical fibers in the second branch sheath are merged and extended into the merging end sheath; A first connector is provided at the end of the first optical fiber unit, and the first connector is connected to the first optical fiber. A second connector is provided at the end of the second optical fiber unit, and the second connector is connected to the second optical fiber. A third connector is provided at the end of the merging portion, and the third connector is connected to the first optical fiber and the second optical fiber.

2. The MPO pre-terminated optical cable according to claim 1, characterized in that: The first branch sheath and the second branch sheath form an 8-shaped structure.

3. The MPO pre-terminated optical cable according to claim 1, characterized in that: The tear groove comprises a first tear groove and a second tear groove, wherein the first tear groove is located at one side of the connection, and the second tear groove is located at the other side of the connection.

4. The MPO pre-terminated optical cable according to claim 1, characterized in that: The first branch sheath and the second branch sheath are an integrated structure.

5. The MPO pre-terminated optical cable according to claim 1, characterized in that: The first branch sheath is provided with a first aramid fiber, and the second branch 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 branch 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, there are 8 second optical fibers, the first connector is a first 8-core connector, the first 8-core connector connects the 8 first optical fibers, the second connector is a second 8-core connector, the second 8-core connector connects the 8 second optical fibers, and the third connector is a 16-core connector, the third connector connects the 8 first optical fibers and the 8 second optical fibers.

8. The MPO pre-terminated optical cable according to claim 1, characterized in that: The first connector and / or the second connector and / or the third connector are MPO connectors or MTP connectors or other multi-core connectors.

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