CN104238035A - Optical backboard and manufacturing method thereof - Google Patents

Abstract

The invention relates to the field of manufacturing optical connectors, in particular to an optical backplane and a manufacturing method thereof. The optical backplane includes a box body and at least one bundle of scattered optical fibers. One end of each bundle of scattered optical fibers is connected to an optical connector fixedly mounted on one side of the box body, and the other end is connected to the outside of the box body and connected to the corresponding device. Optical contacts for interface adaptation. Since each bundle of scattered optical fibers is assembled with the corresponding optical contact after being bundled together, multiple optical fibers can be connected to the corresponding optical contact at one time, which can greatly improve the assembly efficiency of the optical backplane. In addition, and The loose optical fibers after tape can also be reinforced for each other, thereby also reducing the damage to the optical fibers during the assembly process, thereby reducing the cost of producing the optical backplane, because the at least one bundle of scattered optical fibers and the corresponding optical connectors and optical contacts The existence of components also enables the arrangement of optical fibers to be pre-embedded in the box, thus solving the problems of messy optical fiber wiring and difficult wiring in a small space.

Description

Optical backplane and manufacturing method thereof

technical field

The invention relates to the field of manufacturing optical connectors, in particular to an optical backplane and a manufacturing method thereof.

Background technique

With the development of optical fiber communication technology, the optical fiber access network has developed rapidly. Optical fibers with small size, light weight, and large transmission capacity have also become the main components for high-speed, high-quality signal transmission inside equipment. However, the increasing demand of users for the amount of information makes the number of optical fiber cores required in a certain space (mainly inside the equipment) continue to increase. The increase in the number of optical fiber cores will inevitably bring great difficulties to the routing and bundling of optical fibers in the limited space in the equipment. Specifically, in the prior art, most of the equipment still uses traditional loose optical fibers (bare optical fibers with a diameter less than 0.9mm are generally used inside the equipment), and the number of optical fibers in practical applications often reaches hundreds, so Too many optical fibers will inevitably lead to complex wiring relationships (due to difficulties in identifying optical fibers), which in turn brings inconvenience to the arrangement and detection of optical fibers. In this case, if it is possible to manufacture an optical backplane like the commonly used printed boards in the electrical field, the above problems will certainly be solved. However, there is currently no relatively mature optical backplane product on the market. The reason is mainly because the bare optical fibers that pass through the wires are often in a scattered state. In this case, the connection between the optical fibers and the corresponding optical contacts is extremely difficult, which also makes the manufacturing cost of optical backplane products too high. , which eventually led to the limitation of the development of optical backplane products.

Contents of the invention

The object of the present invention is to provide an optical backplane that is easy to assemble, so as to solve the problems of messy optical fiber wiring and difficult wiring in a small space.

At the same time, the object of the present invention is also to provide a method for manufacturing the above-mentioned optical backplane.

In order to solve the above problems, the optical backplane adopts the following technical scheme: the optical backplane includes a box body and at least one bundle of scattered optical fibers, one end of each bundle of scattered optical fibers is connected to an optical connector fixedly mounted on one side of the box body, and the other end is connected to the box body. The outside of the body is provided with and connected with an optical contact adapted to the interface on the corresponding device.

The parts of each bundle of scattered optical fibers located in the box are fixed together by adhesive and fixed in the box.

The optical contacts are MT contacts.

Tapes are attached to the positions where the bulk fibers are combined, and the width of the tape is greater than the width of the bulk fibers after they are combined.

An identification label is fixed at the juxtaposition position of at least one bundle of scattered optical fibers through a heat-shrinkable tube.

The optical backplane manufacturing method adopts the following technical scheme: including the following steps: 1) Wiring and arranging at least one bundle of loose optical fibers in the corresponding tooling and filling and fixing them with glue; 3) Connect one end of the loose optical fiber in the box to the optical connector assembled on the box, and tape and thread the other end of each loose optical fiber out of the box; 4) Connect optical contacts to the bundled loose optical fibers.

The bundling of scattered optical fibers is achieved by arranging them closely and then applying adhesive.

When applying the adhesive, apply it with a sponge along the length of the bulk fiber.

Tapes are attached to the positions where the bulk fibers are combined, and the width of the tape is greater than the width of the bulk fibers after they are combined.

Corresponding identification labels are provided on the adhesive tape, and the identification labels are packaged and fixed at the joint position of loose optical fibers by heat-shrinkable tubes.

In the optical backplane of the present invention, since each bundle of scattered optical fibers is assembled with the corresponding optical contact after being bundled, it is possible to realize the connection of multiple optical fibers and the corresponding optical contact at one time, thereby greatly improving the optical backplane. The assembly efficiency of the board, in addition, the scattered optical fibers after being combined can also reinforce each other, thereby reducing the damage to the optical fibers during the assembly process, thereby reducing the cost of producing the optical backplane, because the at least one bundle of scattered optical fibers and the The existence of corresponding optical connectors and optical contacts also enables the arrangement of optical fibers to be pre-embedded in the box, thereby solving the problems of messy optical fiber wiring and difficult wiring in a small space.

Furthermore, the adhesive can protect and fix the loose optical fiber; the adhesive tape can support and protect the optical fiber ribbon (formed after the loose optical fiber is combined); the heat shrinkable tube can not only fix the identification label, but also Play the role of protecting the optical fiber ribbon and enhancing its tensile performance.

Description of drawings

FIG. 1 is a schematic structural diagram of an optical backplane;

Fig. 2 is a schematic structural view of a bundle of scattered optical fibers in Fig. 1 at the parallel position;

Fig. 3 is a schematic diagram of the distribution of optical fiber ribbons, adhesive tapes, identification labels and heat sink tubes;

Fig. 4 is a schematic diagram of a heat-shrinkable tube passing through an optical contact.

Detailed ways

The embodiment of the optical backplane, as shown in Figures 1-4, includes a box body 11 and loose optical fibers 12, the box body 11 is a hollow structure, its outer contour is roughly an isosceles trapezoid and an optical connector 13 is fixedly installed on one side; In addition, in this embodiment, the scattered optical fibers 12 are all bare optical fibers and have multiple bundles, and each bundle of scattered optical fibers 12 has twelve pieces, which are fixed together by adhesive and fixed in the box body 11. One end is connected to the corresponding optical connector 13, and the other end extends to the outside of the box body 11 through the outlet port provided on the box body 11, and each bundle of scattered optical fibers 12 extends out of the box body 11 and forms an optical fiber ribbon. , adhesive tape 14 is mounted on the optical fiber ribbon, in the present embodiment, adhesive tape 14 adopts polyimide adhesive tape, and its width is slightly larger than the width of optical fiber ribbon thereby forming a flexible support, and identification label 15 is also mounted on adhesive tape 14, The identification label 15 is encapsulated on the adhesive tape 14 by a heat-shrinkable tube 16. Since the width of the adhesive tape 14 is greater than the width of the optical fiber ribbon, it can avoid crushing the optical fiber ribbon when the heat-shrinkable tube 16 is heated and shrunk, and each bundle of scattered optical fibers passes through and The optical fiber ribbon formed after ribboning is also connected with an optical contact 17, which is used to fit and insert with the interface on the corresponding equipment. In this embodiment, the optical contact 17 is an MT contact. When entering the corresponding optical contact, you can apply glue on the corresponding end of the heat-shrinkable tube 16 and ensure that the glue is not higher than the heat-shrinkable tube, and then insert a bundle of loose optical fibers into the corresponding optical contact 17 at one time. That's it.

In other embodiments of the optical backplane, the number of scattered optical fibers can also be more than one, and the identification labels can also be set on the corresponding number of optical fiber ribbons according to needs, or the identification labels can also be omitted; in addition, the location of the scattered optical fibers One end of the box body can also be paralleled. In this case, the optical connector on the box body can be an MT connector, or it can not be paralleled. In this case, the optical connector on the box body can be Using circular multi-core optical connectors, etc.

An embodiment of the method for manufacturing an optical backplane. According to this method, the optical backplane in the above embodiment can be manufactured. The method includes the following steps: 1) Wiring and arranging at least one bundle (12) of scattered optical fibers in a corresponding tooling and filling 2) Take out the optical fiber and the solidified adhesive that have been wired in step 1) from the tooling and fix them in the box; the adhesive and the box can be fixed by bonding; 3) Connect one end of the scattered optical fiber in the box to the optical connector assembled on the box, and tape the other end of each bundle of scattered optical fiber and pass it out of the box. It is realized by applying adhesive after it is closely arranged. When applying the adhesive, apply the adhesive along the length extension direction of the loose fiber with a sponge; in addition, stick the tape at the position where the loose fiber is combined. Here, polyimide tape is used. The width of the adhesive tape is greater than the width of the combined loose optical fiber, and then the corresponding identification label is set on the adhesive tape, and the identification label is packaged and fixed at the combined position of the loose optical fiber through a heat shrinkable tube; 4) On the combined loose optical fiber Connect the optical contact, the optical contact adopts MT contact.

According to the above process, the mechanical properties of the optical fiber ribbons obtained after combining loose optical fibers and the optical fiber ribbons sold in the market are the same as those of optical fibers, and can resist certain pulling force and torsional force. In addition, since the polyimide tape added inside can effectively play a supporting role, the external heat-shrinkable tube will not squeeze the internal bare optical fiber during heat shrinkage, nor will the internal The bare fiber is deformed and twisted. The performance of the fiber optic ribbon after the ribbon processing is consistent with that of the existing multi-core fiber ribbon on the market, and it can be easily penetrated into the MT contact, and there is little process loss (such as fiber breakage, fiber optic fall off, etc.). Then follow-up grinding, wearing parts and other processes.

Claims (10)

1. The optical backplane is characterized in that it includes a box body and at least one bundle of scattered optical fibers, one end of each bundle of scattered optical fibers is connected to an optical connector fixedly mounted on one side of the box body, and the other end is paralleled outside the box body Optical contacts adapted to the interface on the corresponding device are connected. 2 . The optical backplane according to claim 1 , wherein the part of each bundle of scattered optical fibers located in the box is fixed together by an adhesive and fixed in the box. 3 . 3. The optical backplane according to claim 1, wherein the optical contacts are MT contacts. 4 . The optical backplane according to claim 1 , wherein an adhesive tape is pasted at a position where the scattered optical fibers are combined, and the width of the adhesive tape is greater than the width of the combined scattered optical fibers. 5 . 5. The optical backplane according to any one of claims 1-4, wherein at least one bundle of scattered optical fibers is packaged and fixed with an identification label at a position where it is tapered. 6. The method for manufacturing the optical backplane according to claim 1, comprising the following steps: 1) Wiring and arranging at least one bundle of loose optical fibers in the corresponding tooling and fixing it with glue; ) The optical fiber and the solidified adhesive are taken out from the tooling and fixed in the box; 3) Connect the end of the scattered optical fiber in the box to the optical connector assembled on the box. The other end of the loose fiber is paralleled and passed out of the box; 4) Connect the optical contact to the combined loose fiber. 7. The method according to claim 6, characterized in that the bundling of scattered optical fibers is realized by arranging them closely and then applying adhesive. 8 . The method according to claim 7 , wherein the adhesive is applied with a sponge along the extending direction of the length of the loose optical fiber. 9 . 9 . The method according to claim 6 , wherein adhesive tape is pasted at the doubling position of the scattered optical fibers, and the width of the adhesive tape is greater than the width of the doubling of the bulk optical fibers. 10 . 10 . The method according to claim 9 , wherein the adhesive tape is provided with a corresponding identification label, and the identification label is packaged and fixed by a heat-shrinkable tube at the joint position of the loose optical fibers. 11 .