Multi-input and multi-output optical fiber beam splitter

Abstract

The utility model provides a multi-input and multi-output optical fiber beam splitter, which is formed by combining two one-to-multiple fused biconical taper optical splitters and is used for transmitting and distributing optical signals, one one-to-multiple fused biconical taper optical splitter is reversely applied, namely, the output end of the one-to-multiple fused biconical taper optical splitter is used as the input end of the multi-input and multi-output optical fiber beam splitter, and the output end of the one-to-multiple fused biconical taper optical splitter is used as the output end of the multi-input and multi-output optical fiber beam splitter. The output end of the other one-to-multiple fused biconical taper optical splitter is used as the output end of the multi-input and multi-output optical fiber beam splitter, and the input ends of the two one-to-multiple fused biconical taper optical splitters are connected. According to the optical fiber beam splitter provided by the utility model, the two multi-path fused biconical taper optical splitters which are reversely connected are manufactured by adopting the fused biconical taper technology, and the multi-path fused biconical taper optical splitter at the input end is an equally-divided optical splitter, so that the splitting ratios from each input end to any output end of the optical fiber beam splitter are kept the same; therefore, the purpose of mutual backup between the input ends is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of optical fiber component technology, and in particular relates to a multi-input, multi-output optical fiber beam splitter. Background Technology

[0002] Fiber optic beam splitters are important passive components in fiber optic communication systems. With the continuous improvement of optical system performance, there are increasing demands on fiber optic beam splitters for miniaturization, integration, and compactness. In many communication systems, it is necessary to connect multiple devices, including one-to-many and multiple-to-multiple connections.

[0003] Traditional 2*2 non-uniform beam splitters have a significant dependence on the splitting ratio of the two input ends to the two output ends. Under non-uniform splitting ratio conditions, the splitting ratio from different input ends to different output ends is inconsistent, and it is impossible to maintain the same splitting ratio from different input ends to the same output end. Therefore, the input ends are not interchangeable and cannot meet the usage requirements of mutual backup between the two input ends. Utility Model Content

[0004] This application primarily addresses the issue of mutual backup at the input ends of existing fiber optic beam splitters. To resolve this technical problem, a multi-input, multi-output fiber optic beam splitter is proposed, with the specific technical solution as follows:

[0005] Two fused biconical tapered optical splitters are combined to form a multi-input multi-output fiber optic bundle splitter for transmitting and distributing optical signals. One of the fused biconical tapered optical splitters is used in reverse, that is, its output is used as the input of the multi-input multi-output fiber optic bundle splitter, and the output of the other fused biconical tapered optical splitter is used as the output of the multi-input multi-output fiber optic bundle splitter. The inputs of the two fused biconical tapered optical splitters are connected together.

[0006] Meanwhile, the two fused biconical optical splitters can be split into two, three, or four channels.

[0007] In application, the input ends of a multi-input, multi-output fiber optic bundle splitter do not work simultaneously, and the input ends can serve as backups for each other and replace one another.

[0008] The reverse-application one-to-many fused tapered optical splitter should be an equal-split optical splitter.

[0009] The optical fiber bundle splitter contains either single-mode or multimode optical fiber, and both are bare fibers.

[0010] In this application, the packaging structure of the fiber optic bundle splitter has a diameter of 3-4 mm and a length of 60-100 mm. The packaging structure includes a protective adhesive, a metal shell, a packaging substrate, and a glass tube.

[0011] The beneficial effects of this utility model are as follows: The fiber optic bundle splitter of this utility model is made by using fused tapered fiber technology to create two reverse-connected multi-path fused tapered fiber optic bundle splitters, and one of the multi-path fused tapered fiber optic bundle splitters at the input end is an equal-splitting fiber optic bundle splitter, so that the splitting ratio from each input end to any output end of the fiber optic bundle splitter remains the same, thereby achieving the purpose of mutual backup between the input ends. Attached Figure Description

[0012] Figure 1 The diagram shown is a structural schematic of the fiber optic beam splitter in Embodiment 1;

[0013] Figure 2 The diagram shown is a schematic of the packaging structure of the fiber optic beam splitter in Embodiment 1;

[0014] Figure 3 The diagram shown is a schematic representation of the fiber optic beam splitter in Embodiment 2.

[0015] Figure 4 The diagram shown is a structural schematic of the fiber optic beam splitter in Example 3. Detailed Implementation

[0016] In the following description, certain specific details are set forth to provide a thorough understanding of various embodiments. However, those skilled in the art will understand that the present invention can be practiced without these details. In other instances, well-known structures have not been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments. Unless the context otherwise requires, throughout the specification and appended claims, the word "comprising" shall be interpreted in an open-ended, inclusive sense, i.e., as "including but not limited to".

[0017] Example 1

[0018] like Figure 1 As shown, this is a 2*2 type beam splitter. The beam splitter has two input terminals A1 and A2, and two output terminals B1 and B2. There is an encapsulation structure between the input terminals and the output terminals.

[0019] like Figure 2 As shown, there are two fused tapered optical splitters between the input and output terminals. The output terminal of one fused tapered optical splitter is connected to the input terminals A1 and A2, and the output terminal of the other fused tapered optical splitter is connected to the two output terminals B1 and B2. The input terminals of the two fused tapered optical splitters are connected to each other.

[0020] The connection between the output end and the input ends A1 and A2 of the fused biconical taper optical splitter means that the output end of the fused biconical taper optical splitter can be directly used as the input ends A1 and A2, or the output end of the fused biconical taper optical splitter can be fused with other optical fibers to form the input ends A1 and A2.

[0021] As a fused biconical optical splitter, it consists of two or more optical fibers bundled together, then fused and stretched on a biconical machine, with the splitting ratio being monitored in real time. Once the splitting ratio reaches the required level, the fusion stretching process ends. One end retains one optical fiber (the rest are cut off) as the input end, while the other end serves as a multi-output end.

[0022] In this application, the fused biconical tapered optical splitter connected to input terminals A1 and A2 should be used in reverse, that is, the input terminal of the fused biconical tapered optical splitter is used as the output terminal, and the output terminal is used as the input terminal.

[0023] In this application, the splitting ratio of the fused biconical tapered optical splitter connected to input terminals A1 and A2 is 50%:50%, and the splitting ratio of the fused biconical tapered optical splitter connected to output terminals B1 and B2 is 20%:80%. The splitting ratio from input terminal A1 to output terminal B1 is 10%, the splitting ratio from input terminal A2 to output terminal B1 is also 10%, the splitting ratio from input terminal A1 to output terminal B2 is 40%, and the splitting ratio from input terminal A2 to output terminal B2 is also 40%, which enables input terminals A1 and A2 to serve as backups for each other.

[0024] like Figure 2 As shown, the encapsulation structure includes a metal shell 10, a glass tube 11, an encapsulation substrate 12, and a protective adhesive 13. The encapsulation substrate 12 fills and covers the outside of the fused tapered optical splitter, the glass tube 11 covers the outside of the encapsulation substrate 12, the metal shell 10 is provided with two cavities, which are respectively used to accommodate the metal shells 10 corresponding to the two fused tapered optical splitters, and the outside of the metal shell 10 is covered with protective adhesive 13 for protection.

[0025] Example 2

[0026] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the number of output terminals is different. In this embodiment, there are three output terminals. Correspondingly, the fused tapered optical splitter connected to the output terminals is also set as a fused tapered optical splitter that splits into three paths.

[0027] The splitting ratio of the fused biconical tapered optical splitter connected to the input end is 50%:50%, and the splitting ratio of the fused biconical tapered optical splitter connected to the output end is 33.3%:33.3%:33.3%. The splitting ratio from any input end to any output end is 16.7%, which can realize mutual backup of the input ends.

[0028] Example 3

[0029] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the number of input terminals is different. In this embodiment, there are three input terminals. Correspondingly, the fused tapered optical splitter connected to the input terminals is also set as a fused tapered optical splitter that splits into three paths.

[0030] The splitting ratio of the fused biconical tapered optical splitter connected to the input end is 33.3%:33.3%:33.3%, and the splitting ratio of the fused biconical tapered optical splitter connected to the output end is 20%:80%. The splitting ratios from any input end to the two output ends are 6.7% and 26.6%, respectively, which can achieve mutual backup of the input ends.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A multi-input, multi-output fiber optic beam splitter, characterized in that, It includes two reverse-connected one-to-many optical splitters, with the inputs of the two optical splitters connected together. One optical splitter is reverse-configured so that its output is used as the input of an optical fiber bundler. The optical splitter configured in reverse is an equal-split optical splitter.

2. The multi-input, multi-output fiber optic beam splitter according to claim 1, characterized in that, The optical splitter is a 1-to-2, 1-to-3, or 1-to-4 optical splitter.

3. The multi-input, multi-output fiber optic beam splitter according to claim 1, characterized in that, The optical splitter is formed by fused alumina tapering of optical fiber.

4. The multi-input, multi-output fiber optic beam splitter according to claim 1, characterized in that, The optical fiber beam splitter contains either single-mode or multimode optical fiber.

5. The multi-input, multi-output fiber optic beam splitter according to claim 1, characterized in that, All optical fibers in the optical fiber bundle splitter are bare fibers.

6. The multi-input, multi-output fiber optic beam splitter according to claim 1, characterized in that, The package structure of the fiber optic beam splitter has a diameter of 3-4 mm and a length of 60-100 m.

7. The multi-input, multi-output fiber optic beam splitter according to claim 1, characterized in that, It also includes a packaging structure, which includes a metal shell, a glass tube, a packaging substrate, and a protective adhesive. The packaging substrate fills and covers the outside of the optical splitter, the glass tube covers the outside of the packaging substrate, the metal shell is provided with two cavities to accommodate the shell, and the outside of the metal shell is covered with protective adhesive.

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