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Method for preparing multi-core optical fiber coupler based on tapering self-assembly

A multi-core optical fiber and coupler technology is applied in the field of preparation of multi-core optical fiber couplers based on self-assembly of tapers, and achieves the effects of protecting pigtails, reducing insertion loss and having good scalability.

Active Publication Date: 2016-07-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above defects or improvement needs of the prior art, the present invention provides a method for preparing a multi-core fiber coupler based on tapered self-assembly, which aims to solve the geometric alignment problem in the preparation of the multi-core fiber coupler and reduce the Insertion loss due to geometric misalignment while simplifying process flow

Method used

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  • Method for preparing multi-core optical fiber coupler based on tapering self-assembly
  • Method for preparing multi-core optical fiber coupler based on tapering self-assembly
  • Method for preparing multi-core optical fiber coupler based on tapering self-assembly

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Embodiment 2

[0039] Embodiment 2 provides a preferred preparation method of a multi-core optical fiber coupler based on microhole processing. One end of the glass sleeve 2 used in step (2) can be made into a horn mouth to facilitate the insertion of optical fibers.

Embodiment 3

[0040] Embodiment 3 provides a kind of preferred multi-core optical fiber coupler preparation method based on microhole processing, such as Figure 6 As shown, the glass sleeve 2 used in step (2) has a circular uniform through hole, and the diameter of one end of the sleeve can be appropriately reduced by pre-tapering in step (3) to assist the arrangement of the optical fibers at the tail end of the second intermediate piece. The other end is used to protect and align the pigtails.

Embodiment 4

[0041] Embodiment 4 provides a kind of preferred multi-core optical fiber coupler preparation method based on microhole processing, such as Figure 7 As shown, the glass sleeve 2 adopted in step (2) has a circular uniform through hole, and the diameter of one end of the sleeve can be appropriately reduced by pre-tapering in step (3) to assist the removal of the middle part of the second intermediate piece. Fiber alignment, and then continue to reduce the diameter of this end to assist the fiber alignment of the corroded part of the second intermediate piece, and the other end is used to protect and arrange the pigtails.

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Abstract

The invention discloses a method for preparing a multi-core optical fiber coupler based on tapering self-assembly. The method comprises following steps: single mode fiber pretreatment, single mode fiber bundle end preparation, glass bushing tapering, and glass bushing cutting and welding; inserting single mode fiber into the glass bushings entirely, wherein the front ends of the single mode fiber are corroded but the rear ends are still coated with coating; then placing the glass bushing vertically and tapering the glass bushing by use of oxyhydrogen flame, wherein the tapering position is the part which is corroded of the single mode fiber; then cutting and polishing the tapered zones; finally, welding the glass bushing with multi-core optical fiber to complete the preparation of the multi-core optical fiber coupler. The provided method for preparing the multi-core optical fiber coupler based on tapering self-assembly has good scalability and high yield rate, concise process and simple operation.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication and sensing, and more specifically relates to a preparation method of a multi-core optical fiber coupler based on tapered self-assembly. Background technique [0002] In order to meet the needs of communication systems, multi-core optical fibers have been paid more and more attention because they can provide new multiplexing dimensions and greatly increase the capacity of communication systems. The multi-core optical fiber communication system needs to be integrated with the existing single-mode optical fiber communication system, which requires low-loss connection between multi-core optical fiber and single-mode optical fiber. Therefore, multi-core optical fiber couplers are particularly important. cost-critical technologies. [0003] At present, there are several methods for preparing multi-core fiber couplers: [0004] Tapering method: multiple single-core optical fibers a...

Claims

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Application Information

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IPC IPC(8): G02B6/245G02B6/25G02B6/255
CPCG02B6/245G02B6/25G02B6/255
Inventor 唐明甘霖霍亮张聪李岩鹏李博睿付松年沈平
Owner HUAZHONG UNIV OF SCI & TECH
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