Single-mode fiber and multi-core fiber fast coupling device and method

A multi-core fiber, single-mode fiber technology, applied in the coupling of optical waveguides, optics, light guides, etc., can solve the problems of difficult matching of fiber coupling mode fields, end face grinding and polishing, and difficult productization.

Active Publication Date: 2021-05-04
武汉长盈通光电技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the fiber bundle type: (1) Capillary stacking method: the thin-clad single-core single-mode fiber bundles are tightly arranged in the capillary to achieve coupling with multi-core fibers. This preparation method has two difficulties. One is the fiber The arrangement of beams, the second is end face grinding and polishing, and the processing technology is relatively complicated; for example, a method for preparing a multi-core optical fiber coupler based on microhole processing is recorded in Chinese patent document CN 105204119 A
(2) Fused taper method: multiple ordinary single-core single-mode optical fibers are taped to achieve coupling with multi-core optical fibers. This multi-core optical fiber coupler preparation method is difficult to match the fiber coupling mode field, and it is difficult to realize the product change
However, the existing optical fiber connectors cannot realize the connection between single-mode optical fiber and multi-core optical fiber

Method used

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  • Single-mode fiber and multi-core fiber fast coupling device and method
  • Single-mode fiber and multi-core fiber fast coupling device and method
  • Single-mode fiber and multi-core fiber fast coupling device and method

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Embodiment 1

[0048] Such as Figure 1~7 Among them, a single-mode optical fiber and multi-core optical fiber fast coupling device, the single-mode optical fiber 1 is connected to the single eccentric optical fiber 2, the single eccentric optical fiber 2 is inserted into the first ferrule 4, and the multi-core optical fiber 3 is inserted into the second ferrule 5 for connection; preferably Yes, the single-mode optical fiber 1 and the single eccentric optical fiber 2 are connected by an alignment device, they are fused together based on the cores of the two, and the area near the melting point is heated and fixed by the shrink sleeve 7 .

[0049] The first ferrule 4 and the second ferrule 5 are connected in a rotatable manner;

[0050] The first ferrule 4 is in contact with the end face of the second ferrule 5 , the single eccentric fiber 2 is in contact with the end face of the multi-core fiber 3 , and the first ferrule 4 and the second ferrule 5 can rotate relative to each other. Until th...

Embodiment 2

[0062] A preparation method using the above-mentioned single-mode optical fiber and multi-core optical fiber quick coupling device, comprising the following steps:

[0063] S1. Using an alignment device, the single-mode optical fiber 1 and the single-eccentric optical fiber 2 are fused together based on the fiber core; during welding, the two fiber cores are used as the reference and the area near the melting point is fused through the shrink sleeve 7 Heat to fix.

[0064] S2. Smooth the free end of the single eccentric optical fiber 2, and insert it into the first ferrule 4, and smooth the free end of the multi-core optical fiber 3, and insert it into the second ferrule 5;

[0065] The eccentricity of the single eccentric optical fiber 2 is the same as that of the multi-core optical fiber 3;

[0066] S3, fixing and connecting the first ferrule 4 and the second ferrule 5 in a relatively rotatable manner;

[0067] specific as Figure 5 In the process, the single eccentric op...

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Abstract

The invention provides a single-mode optical fiber and a multi-core optical fiber fast coupling device and method, the single-mode optical fiber is connected with a single eccentric optical fiber, the single eccentric optical fiber is inserted into the first ferrule, and the multi-core optical fiber is inserted into the second ferrule for connection; the first ferrule It is connected to the second ferrule in a rotatable manner; the first ferrule is in contact with the end face of the second ferrule, the single eccentric fiber is in contact with the end face of the multi-core fiber, and the first ferrule and the second ferrule can be opposite turn. By connecting the single-mode fiber with the single eccentric fiber first, and then connecting with the multi-core fiber with the same eccentricity using ferrule positioning, the fast coupling between the single-mode fiber and the multi-core fiber can be realized, and the multi-core fiber can be connected with a single Fast alignment between eccentric fibers, so as to realize the connection with ordinary single-mode fibers, which is convenient and fast, and is suitable for use in the field environment. The alignment of the core is accomplished by rotating the special ferrule, and the alternate use of the core of the multi-core fiber can also be realized.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication and sensing, in particular to a fast coupling device and method for a single-mode optical fiber and a multi-core optical fiber. Background technique [0002] Multi-core fiber can be simply defined as the existence of multiple cores in a common cladding region. Since the channel capacity of single-mode fiber has increased to 100Tbit / s, it is close to the limit. Multi-core fiber provides the possibility to increase the capacity of fiber communication. However, the currently used communication equipment is output by single-mode optical fiber. If it is necessary to fully integrate multi-core optical fiber communication into the communication system, it is required to achieve low-loss connection between multi-core optical fiber and single-mode optical fiber. Therefore, multi-core optical fiber coupling technology It is particularly important, and it is a key factor to promote the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/38G02B6/36
CPCG02B6/3604G02B6/3818G02B6/3838G02B6/3885G02B6/389
Inventor 陈未萍廉正刚袁磊卜兴华张博但锦刘璇皮亚斌
Owner 武汉长盈通光电技术股份有限公司
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