CN108279466A - A kind of optical branching device - Google Patents

Abstract

The embodiment of the present invention discloses an optical splitter, the optical splitter includes a module box, a PLC splitter, a sleeve, an input optical fiber and an output optical fiber, and the module box includes at least one input panel hole and at least one output panel Holes, each panel hole is provided with a set of bushings; the PLC splitter is fixed inside the module box; the input optical fiber at the input end of the PLC splitter extends to the module through the bushing set in the input panel hole Outside the box, an optical fiber connector is provided; the output optical fiber at the output end of the PLC splitter extends to the outside of the module box through a sleeve arranged in the hole of the output panel, and an optical fiber connector is provided. The optical splitter provided by the embodiment of the present invention is small in size, safe and reliable in performance, convenient and flexible in installation, and convenient in expansion, which reduces connection loss and cost, realizes network expansion of lines within a certain space range, and enables adjustment The fiber optic connector is easy to plug and unplug.

Description

an optical splitter

technical field

Embodiments of the present invention relate to the field of optical fiber communication, and in particular to an optical splitter.

Background technique

Optical splitter, also known as optical splitter, is one of the important passive components in optical fiber link. Optical splitters can be divided into two types: fusion tapered type and planar waveguide type (PLC type) according to the principle of light splitting. PLC optical splitter is an integrated waveguide optical power sharing device based on quartz version. It is one of the most important passive devices in optical fiber link. connected devices.

PLC optical splitters are packaged into different structures according to different usage methods and locations, so that they can be used conveniently. Among them, the computer room mostly uses rack-mounted or distribution frames and other installation structures. Box-type optical splitters are widely used and packaged in racks or distribution frames. Adapters are installed on the panels of traditional racks or distribution frames to integrate optical The splitter is connected with the adapter, and the optical splitter and the adapter are used together to complete the splitting.

In the field of optical fiber communication, connectors of various international standards have been widely used in quick docking, plugging and unplugging of cables, especially various types (ST, SC, MPO, LC, etc.) of optical fiber connectors are used in conjunction with adapters. The distribution frame in the computer room is usually connected to the adapter with multiple optical fiber connectors densely arranged. For example, the LC type optical fiber connector is detached from the adapter by pressing the button. When the user needs to take out the LC optical fiber arranged in the middle When connecting the head, it may be necessary to remove other fiber optic connectors arranged around the fiber optic connector before the specified LC fiber optic connector can be pulled out.

It can be seen that it is inconvenient to use the existing optical splitter to expand the network, and the fiber distribution capacity cannot meet the user's requirements, which affects the use effect and market expansion prospects; and it is inconvenient to plug and unplug, and the operation is complicated when the line needs to be adjusted, which is time-consuming and laborious. Sometimes it may also be necessary to disrupt other communication networks.

Contents of the invention

In view of the above problems, the embodiment of the present invention provides an optical splitter, so as to facilitate network expansion of lines and facilitate plugging and unplugging of optical fiber connectors when adjusting them.

An embodiment of the present invention provides an optical splitter, including:

A module box, the module box includes at least one input panel hole and at least one output panel hole, and a group of sleeve pipes are respectively arranged in each of the panel holes;

A PLC splitter, the PLC splitter is fixed inside the module box; the input optical fiber at the input end of the PLC splitter extends to the outside of the module box through a sleeve arranged in the hole of the input panel, and An optical fiber connector is provided; the output optical fiber at the output end of the PLC splitter extends to the outside of the module box through a sleeve arranged in the hole of the output panel, and an optical fiber connector is provided.

On the basis of the above solution, the module box is an LGX module box.

On the basis of the above solution, the PLC splitter is a bare fiber PLC splitter with steel pipes.

On the basis of the above solution, the sleeve is fixedly connected to the panel hole by AB glue.

On the basis of the above scheme, each set of sleeves is fixed by a heat-shrinkable tube with adhesive backing.

On the basis of the above solution, the PLC splitter is fixed inside the module box, and the input end is on the side close to the panel hole, and the output end is on the side away from the panel hole.

On the basis of the above solution, the input optical fiber at the input end of the PLC splitter rotates counterclockwise for one circle in the module box, and extends to the outside of the module box through the sleeve fixed in the hole of the input panel.

On the basis of the above solution, the output optical fiber at the output end of the PLC splitter rotates clockwise for one and a half circles in the module box, and extends out of the module box through the sleeve fixed in the hole of the output panel.

On the basis of the above solution, the optical fiber connector is a handle-type optical fiber connector.

In the embodiment of the present invention, a set of bushings are arranged in each panel hole of the module box, the PLC splitter is fixed inside the module box, and the other end of the input optical fiber at the input end of the PLC splitter passes through the The bushing is extended to the outside of the module box, and a fiber optic connector is set; the other end of the output fiber at the output end of the PLC splitter is extended to the outside of the module box through the bushing arranged in the hole of the output panel, and a fiber optic connector is set, so that the optical splitter The router is small in size, easy to install and flexible, and easy to expand, reducing the connection loss and cost, realizing the network expansion of the line within a certain space range, making it easy to plug and unplug when adjusting the optical fiber connector, and making the adjustment of the optical communication line More convenient and faster.

Description of drawings

FIG. 1 is a schematic structural view of an optical splitter in Embodiment 1 of the present invention;

Fig. 2a is the front view of the module box in Embodiment 1 of the present invention;

Fig. 2b is a side view of the module box in Embodiment 1 of the present invention;

Fig. 2c is a cross-sectional view of the module box in Embodiment 1 of the present invention;

Fig. 2d is a schematic structural diagram of the module box in Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the connection mode of the optical fiber in the module box in the second embodiment of the present invention;

Fig. 4a is a front view of the handle type optical fiber connector in the second embodiment of the present invention;

Fig. 4b is a top view of the handle type optical fiber connector in the second embodiment of the present invention;

Fig. 4c is a schematic structural diagram of a handle-type optical fiber connector in Embodiment 2 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, rather than to limit the present invention. In addition, it should be noted that, for the convenience of description, only some parts related to the present invention are shown in the drawings but not all structures.

Embodiment one

Fig. 1 is a schematic structural diagram of an optical splitter in Embodiment 1 of the present invention, and this embodiment can be used for splitting optical signals. As shown in FIG. 1 , the optical splitter includes: a module box 110 , a PLC splitter, a ferrule set 120 , an input optical fiber 130 , an output optical fiber 140 and an optical fiber connector 150 . Wherein, the PLC splitter is not shown in the figure.

Specifically, the module box 110 includes at least one input panel hole and at least one output panel hole, and a bushing group 120 is respectively arranged in each said panel hole, and each group of bushings 120 includes at least one bushing; PLC branch The device is fixed inside the module box; the other end of the input optical fiber 130 at the input end of the PLC splitter extends to the outside of the module box 110 through the sleeve 120 arranged in the hole of the input panel, and is provided with an optical fiber connector 150; the output end of the PLC splitter The other end of the output optical fiber 140 extends to the outside of the module box 110 through the sleeve 120 disposed in the hole of the output panel, and is provided with an optical fiber connector 150 .

Fig. 2a is a front view of the module box in Embodiment 1 of the present invention. As shown in Figure 2a, the upper and lower ends of the module box 110 are respectively provided with fixing devices 111 for fixing the module box on the frame, and the side of the module box is a panel 112. Fig. 2b is a side view of the module box in Embodiment 1 of the present invention, the composition of panel 112 is shown in the figure, as shown in Fig. 2b, panel 112 is made up of input panel hole 114 and output panel hole 113, and each panel hole A set of ferrules are fixed in each of them, so that the input optical fiber or the output optical fiber extends out of the module box 110 through the ferrule, wherein the ferrule is not shown in FIG. 2b. It should be noted that the positions of the input panel holes and the output panel holes are only shown in Fig. 2b as examples, and the specific use of each panel hole in the module box for input or output is not limited.

Fig. 2c is a cross-sectional view of the module box in Embodiment 1 of the present invention; as can be seen from Fig. 2c, the inside of the module box 110 has a baffle 115, and the bushing group 120 is fixed between the baffle 115 and the panel 112. Optionally, it can Inject AB glue into the glue groove formed by the baffle plate 115 and the panel 112 in the module box to fix the sleeve set 120 . Fig. 2d is a schematic structural diagram of the module box in Embodiment 1 of the present invention, which shows the overall structure of the module box. It should be noted that Fig. 2a, Fig. 2b, Fig. 2c and Fig. 2d only schematically show the structure of the module box, and do not specifically limit it.

In order to make the fixing of the casing more firm and prevent the casing from shrinking or bending deformation in the later stage, before the casing group is fixed in the panel hole, the casing can be cut to a preset length, and then the casing can be baked at a high temperature for a certain period of time. Bake, and then fix multiple casings as a group with a heat-shrinkable tube with adhesive backing, and insert the casing group fixed with the heat-shrinkable tube into the panel hole of the module box, and finally form the baffle and the panel in the module box Inject AB glue into the glue groove to fix the sleeve. Optionally, the sleeve can be baked at 85°C for 2-4 hours to prevent optical splitters from breaking fibers or significantly increasing loss due to sleeve shrinkage or bending deformation under extreme conditions, affecting Transmission performance, which in turn affects the transmission of optical signals.

In the technical solution of this embodiment, a set of bushings are arranged in each panel hole of the module box, the PLC splitter is fixed inside the module box, and the other end of the input optical fiber at the input end of the PLC splitter is set through the input panel hole The inner sleeve extends to the outside of the module box, and is provided with a fiber optic connector; the other end of the output fiber at the output end of the PLC splitter is extended to the outside of the module box through the sleeve installed in the hole of the output panel, and is equipped with an optical fiber connector , making the optical splitter small in size, safe and reliable in performance, convenient and flexible in installation, and convenient in expansion, reducing connection loss and cost, realizing the network expansion of lines within a certain space range, and making the adjustment of optical fiber connectors It is easy to pull out, making it more convenient and quick to adjust the optical communication line.

On the basis of the above solution, the module box can be any hollow module box with multiple panel holes. Optionally, the module box can be an LGX module box. The LGX module box is easy to install and maintain, and its metal shell can well protect the device, making the performance of the optical splitter safe and reliable. Wherein, there are various sizes and types of the LGX module box, which are not limited here.

On the basis of the above solution, the PLC splitter can be a bare fiber PLC optical fiber splitter. The bare fiber PLC optical splitter is an integrated waveguide optical power distribution device based on a quartz substrate. It has the characteristics of small size, wide operating wavelength range, high reliability, and good light distribution uniformity. It is especially suitable for passive optical networks ( EPON, BPON, GPON, etc.) to connect the central office and terminal equipment and realize the splitting of optical signals. There are currently two types, 1×N and 2×N. 1×N and 2×N splitters evenly input optical signals from single or double inlets to multiple outlets, or work in reverse to merge multiple optical signals into single or double optical fibers. The bare fiber PLC splitter with steel pipe is the smallest optical splitter among all PLC optical splitters, and can be used in different scenarios with various diameter bushings (0.9/2.0/3.0mm). Compared with other types of PLC splitters, it is small in size and low in cost, making it more convenient to expand the capacity of module boxes and racks based on the PLC splitter.

Embodiment two

Fig. 3 is a schematic diagram of the connection mode of the optical fiber in the module box in the second embodiment of the present invention. This embodiment is based on the above-mentioned embodiment, and embodies the connection mode of the optical fiber in the module box.

As shown in Figure 3, the PLC splitter 160 is fixed inside the module box 110, and the input end is on the side close to the panel hole 114, and the output end is on the side away from the panel hole 114. The input optical fiber 130 at the input end of the PLC splitter 160 extends to the outside of the module box 110 through the sleeve tube fixed in the input panel hole 114; the output optical fiber 140 at the output end of the PLC splitter 160 extends through the sleeve tube fixed in the output panel hole 113 to the outside of the module box 110. Wherein the casing is not shown in the figure.

Specifically, the PLC splitter is packaged into the LGX module box, and when placed, the input end is on the right and the output end is on the left. Then, the input optical fiber 130 of the input end of the PLC splitter 160 is rotated counterclockwise in the module box 110 for one circle, the output optical fiber 140 of the output end of the PLC splitter 160 is rotated clockwise in the module box 110 for one and a half circles, and then the input The output optical fibers respectively enter the bushings in the corresponding panel holes, each optical fiber enters a bushing, comes out from the other end of the bushing, extends to the outside of the module box 110 , and is equipped with an optical fiber connector 150 . Through this connection and winding method, the input or output fiber can have a certain buffer, which can allow the fiber to enter the sleeve smoothly and freely, increase the bending radius of the fiber, and prevent the fiber from being broken or the bending radius being too large due to misoperation during the production process. Small, affecting transmission performance.

It should be noted that Fig. 3 only schematically shows the placement and connection methods of the input optical fiber, the output optical fiber and the PLC splitter, and does not specifically limit it. As long as the input fiber at the input end of the PLC splitter can be extended to the outside of the module box through the sleeve, the output fiber at the output end of the PLC splitter can be extended to the outside of the module box through the sleeve.

On the basis of the above solution, the optical fiber connector is a handle-type optical fiber connector. On the basis of the pigtail optical splitter, the use of a handle-type optical fiber connector more effectively solves the need to adjust the line The problem of inconvenient plugging and unplugging.

Fig. 4a is a front view of the handle type optical fiber connector in the second embodiment of the present invention. As shown in FIG. 4a, the handle-type optical fiber connector 150 includes a handle 151, an optical fiber head 152 and a pull rod 153. Specifically, when the optical fiber connector needs to be pulled out, the pull handle 151 can be pulled in the direction opposite to the optical fiber head 152 to drive the pull rod 153 to move, and then the optical fiber connector can be pulled out. Fig. 4b is a top view of the handle-type optical fiber connector in Embodiment 2 of the present invention; Fig. 4c is a schematic structural diagram of the handle-type optical fiber connector in Embodiment 2 of the present invention. Figure 4a, Figure 4b, and Figure 4c show the structure of the handle-type optical fiber connector from various directions. It should be noted that there are many kinds of handle-type optical fiber connectors, and Fig. 4a, Fig. 4b, and Fig. 4c only schematically show the structure of the handle-type optical fiber connector, and do not specifically limit it.

The embodiment of the present invention embodies the connection mode of the optical fiber in the module box on the basis of the above scheme, by fixing the PLC splitter inside the module box, and the input end is on the side of the panel hole, and the output end is far away from the panel On the side of the hole, the input optical fiber at the input end of the PLC splitter is rotated counterclockwise in the module box for a circle, and is extended to the outside of the module box through the sleeve fixed in the hole of the input panel, and the output optical fiber at the output end of the PLC splitter is The hour hand rotates one and a half times in the module box, and extends out of the module box through the sleeve fixed in the hole of the output panel, so that the connection of the optical fiber has a certain buffer, and prevents the fiber from being pulled or the bending radius is too small during the production process. Increase loss. And the optical fiber connector is set as a handle-type optical fiber connector, which more effectively solves the problem of inconvenient plugging and unplugging when the line needs to be transformed.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (9)

1. An optical splitter, characterized in that, comprising: A module box, the module box includes at least one input panel hole and at least one output panel hole, and a set of bushings are respectively arranged in each of the panel holes; A PLC splitter, the PLC splitter is fixed inside the module box; the input optical fiber at the input end of the PLC splitter extends to the outside of the module box through a sleeve arranged in the hole of the input panel, and An optical fiber connector is provided; the output optical fiber at the output end of the PLC splitter extends to the outside of the module box through a sleeve arranged in the hole of the output panel, and an optical fiber connector is provided. 2. The optical splitter according to claim 1, wherein the module box is an LGX module box. 3. The optical splitter according to claim 1, wherein the PLC splitter is a bare fiber PLC splitter with steel pipes. 4. The optical splitter according to claim 1, wherein the sleeve is fixedly connected to the panel hole by AB glue. 5. The optical splitter according to claim 1, wherein each set of sleeves is fixed by a heat-shrinkable tube with adhesive backing. 6. The optical splitter according to claim 1, wherein the PLC splitter is fixed inside the module box, and the input end is on the side close to the panel hole, and the output end is on the side away from the panel hole . 7. The optical splitter according to claim 6, wherein the input optical fiber at the input end of the PLC splitter rotates counterclockwise for one circle in the module box, and passes through a sleeve fixed in the hole of the input panel. A tube extends out of the module box. 8. The optical splitter according to claim 6, characterized in that, the output end of the PLC splitter rotates clockwise for one and a half circles in the module box, and passes through the casing fixed in the hole of the output panel. extending out of the module box. 9. The optical splitter according to claim 1, wherein the optical fiber connector is a handle-type optical fiber connector.