A preparation method and application of a multi-core fiber coupler with broadband flat transmission

A technology for multi-core optical fibers and couplers, which is applied in the field of preparation of multi-core optical fiber couplers, can solve problems such as transmission loss fluctuations, limit the spectral band range, etc., and achieve the effects of suppressing changes, broadening the spectral band range, and suppressing interference effects.

Active Publication Date: 2021-10-15
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively reduce the insertion loss value of the multi-core fiber coupler. However, due to the multi-clad structure of the fiber, significant interference effects will be introduced during the tapering process, which limits the permeable spectral band range. And the transmission loss will fluctuate obviously with the change of wavelength

Method used

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  • A preparation method and application of a multi-core fiber coupler with broadband flat transmission
  • A preparation method and application of a multi-core fiber coupler with broadband flat transmission
  • A preparation method and application of a multi-core fiber coupler with broadband flat transmission

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preparation example Construction

[0046] In order to achieve a low loss connection of the broadband range, the degree of fluctuation of the transmission loss is suppressed, and a method of preparing a broadband flat-permeable multi-core fiber coupler provided by the present invention includes the following steps:

[0047] (1) After the partial coating layer of the N-root non-multi-clad fiber surface is removed, the n-non-multi-clad fiber is stripped by the cutting layer, and the first intermediate member is obtained.

[0048] (2) After the coating layer of the N root multipoint fiber surface is removed, one end is cut to obtain a second middle member;

[0049] (3) Follow the cutting end of the first middleware and the second middleware to obtain figure 2 The third middleware shown, the third middle member includes three regions, sequentially containing a first non-multiplashing fiber region including a core layer, a cladding layer, and a coating layer, and the second non-multiple of the core layer and the cladding...

Embodiment 1

[0066] 1) Optical fiber pretreatment: Seven a total of single-mode fibers, length is 100-150 cm; stripping part of the single-mode fiber surface is coated, and the fiber is cleaned using dust-free dust-free dust, after it is The end of the stripped coating layer is cut, resulting in the first middle member, the first middle member contains two parts, the first portion is a complete single mode fiber including the core layer, the cladding, and the coating layer, and the second portion is only only Contains the core layer and cladding fiber; intercepting a total of seven, length 20cm; stripping all coating layers of the surface of the multi-clad fiber, and cleaning with dust-free paper with anhydrous ethanol, after Cut, get the second middleware;

[0067] 2) Optical fiber welding: After the cutting end of the first middleware and the cutting end of the second middleware, it is obtained. figure 2 The third middle member shown; the third middle member includes three portions, and the ...

Embodiment 2

[0082] 1) Optical fiber pretreatment: Seven a total of single-mode fibers, length is 100-150 cm; stripping part of the single-mode fiber surface is coated, and the fiber is cleaned using dust-free dust-free dust, after it is The end of the stripped coating layer is cut, resulting in the first middle member, the first middle member contains two parts, the first portion is a complete single mode fiber including the core layer, the cladding, and the coating layer, and the second portion is only only Contains the core layer and cladding fiber; intercepting a total of seven, length 20cm; stripping all coating layers of the surface of the multi-clad fiber, and cleaning with dust-free paper with anhydrous ethanol, after Cut, get the second middleware;

[0083] 2) Optical fiber welding: After the cutting end of the first intermediate member is paired with the cutting end of the second middle member, the third middle member is obtained; the third middle member includes three parts, the fir...

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Abstract

The invention discloses a preparation method and application of a multi-core optical fiber coupler with broadband flat transmission, which belongs to the field of optical fiber communication and sensing, and includes: stripping off part of the coating layer on the surface of N non-multi-clad optical fibers and cutting , strip off the coating on the surface of N multi-clad optical fibers and cut them, weld the two cut ends to obtain the third intermediate piece; stretch the circular capillary to obtain the fourth intermediate piece; insert the third intermediate piece into the first Four intermediate pieces, so that the second non-multi-clad fiber zone is all or partly located in the first cone waist area, and the multi-clad fiber zone is located in the first cone waist area and the first rising cone area at the same time, so as to obtain the fifth intermediate piece; After heating and stretching the first tapered waist region of the fifth middleware, cut the second tapered waist region, select the part from the left end to the cut end, align the cut end with the multi-core optical fiber, and obtain a broadband flat transmission multi-core fiber coupler. The invention can realize the low-loss connection in the broadband range and suppress the fluctuation degree of the transmission loss.

Description

Technical field [0001] The present invention belongs to the field of optical fiber communication and sensing, and more particularly to the preparation method of multi-core optical fiber coupler, a broadband flat, transmitted. Background technique [0002] Multi-core fibers have an important role in lifting system capacity, such as a short-range connection to implement in the data center. Multi-core fibers need to be compatible with existing single-mode fiber communication systems, require low loss connection with single mode fibers, multi-core fiber couplers can function between single-mode fibers and multi-mode optical fibers, so multi-core The preparation technology of the fiber coupler is extremely important. [0003] At present, the preparation method of multi-core fiber coupler mainly has pulling cone self-assembly (CN201610328915.4), a method of preparing a low melting point casing (CN201811089100.0), a preparation method of multiphabed fiber (CN201811393656.9) . [0004] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/245G02B6/25G02B6/255
CPCG02B6/245G02B6/25G02B6/2551G02B6/2552
Inventor 唐明康逸凡甘霖郭显聪杜灏泽付松年
Owner HUAZHONG UNIV OF SCI & TECH
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