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Preparation method and application of multi-core optical fiber coupler with broadband flat transmission function

A multi-core optical fiber and coupler technology, which is applied in the field of multi-core optical fiber coupler preparation, can solve the problems of transmission loss fluctuations and limit the range of spectral bands, and achieve the effects of suppressing fluctuations, broadening the range of spectral bands, and realizing lossy connections

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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method and application of multi-core optical fiber coupler with broadband flat transmission function
  • Preparation method and application of multi-core optical fiber coupler with broadband flat transmission function
  • Preparation method and application of multi-core optical fiber coupler with broadband flat transmission function

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preparation example Construction

[0046] In order to realize the low-loss connection in the broadband range and suppress the fluctuation degree of transmission loss, the preparation method of a multi-core optical fiber coupler with broadband flat transmission provided by the present invention includes the following steps:

[0047] (1) After stripping part of the coating layer on the surface of N non-multi-clad optical fibers, one end of the coating layer of N non-multimode optical fibers is stripped and cut to obtain the first intermediate piece;

[0048] (2) After stripping off the coating layer on the surface of N multi-clad optical fibers, one end thereof is cut to obtain the second intermediate piece;

[0049] (3) The cutting ends of the first intermediate piece and the second intermediate piece are welded to obtain the following figure 2 As shown in the third intermediate piece, the third intermediate piece includes three regions, which are the first non-multi-clad optical fiber region including the core...

Embodiment 1

[0066] 1) Optical fiber pretreatment: Select a total of seven single-mode optical fibers with a length of 100-150cm; strip off part of the coating on the surface of the single-mode optical fiber, and use a dust-free paper dipped in absolute ethanol to clean the optical fiber, and then clean it One end stripped of the coating is cut to obtain the first intermediate piece, the first intermediate piece consists of two parts, the first part is a complete single-mode optical fiber including the core layer, the cladding and the coating layer, and the second part is only An optical fiber including a core layer and a cladding layer; a total of seven multi-clad optical fibers were intercepted, with a length of 20cm; all the coating layers on the surface of the multi-clad optical fiber were stripped off, and cleaned with a dust-free paper dipped in absolute ethanol, and then carried out Cut to get the second middleware;

[0067] 2) Optical fiber fusion splicing: After aligning the cut e...

Embodiment 2

[0082] 1) Optical fiber pretreatment: Select a total of seven single-mode optical fibers with a length of 100-150cm; strip off part of the coating on the surface of the single-mode optical fiber, and use a dust-free paper dipped in absolute ethanol to clean the optical fiber, and then clean it One end stripped of the coating is cut to obtain the first intermediate piece, the first intermediate piece consists of two parts, the first part is a complete single-mode optical fiber including the core layer, the cladding and the coating layer, and the second part is only An optical fiber including a core layer and a cladding layer; a total of seven multi-clad optical fibers were intercepted, with a length of 20cm; all the coating layers on the surface of the multi-clad optical fiber were stripped off, and cleaned with a dust-free paper dipped in absolute ethanol, and then carried out Cut to get the second middleware;

[0083] 2) Optical fiber fusion splicing: After aligning the cut e...

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Abstract

The invention discloses a preparation method and application of a multi-core optical fiber coupler with broadband flat transmission function, and belongs to the field of optical fiber communication and sensing, and the preparation method comprises the following steps: stripping and cutting part of coating layers on the surfaces of N non-multi-cladding optical fibers, stripping the coating layers on the surfaces of the N multi-cladding optical fibers and cutting, and welding two cutting ends to obtain a third middleware; stretching the circular capillary tube to obtain a fourth middleware; inserting the third middleware into the fourth middleware, so that the second non-multi-cladding optical fiber area is completely or partially located in the first taper waist area, wherein the multi-cladding optical fiber area is located in the first taper waist area and the first rising taper area at the same time, and obtaining fifth middleware; and heating and stretching the first conical waist area of the fifth middleware, cutting the second conical waist area, selecting a part from the left end to the cutting end, and aligning and welding the cutting end and the multi-core optical fiber to obtain the multi-core optical fiber coupler with the broadband flat transmission function. According to the invention, low-loss connection in a broadband range can be realized, and the fluctuation degree of transmission loss is suppressed.

Description

technical field [0001] The invention belongs to the field of optical fiber communication and sensing, and more specifically relates to a preparation method and application of a multi-core optical fiber coupler with broadband flat transmission. Background technique [0002] Multi-core optical fibers play an important role in increasing system capacity, such as for short-distance connections in data centers. Multi-core fiber needs to be compatible with existing indifferent fiber optic communication systems, and it needs to achieve low-loss connection with single-mode fiber. Multi-core fiber coupler can act as a bridge between single-mode fiber and multi-mode fiber. Therefore, multi-core fiber The preparation technique of the coupler is extremely important. [0003] At present, the preparation methods of multi-core optical fiber couplers mainly include the tapered self-assembly method (CN201610328915.4), the preparation method based on low melting point sleeve (CN201811089100....

Claims

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Application Information

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Patent Type & Authority Applications(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
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