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Multi-core fiber demultiplexer and manufacturing method thereof

A technology of a multi-core optical fiber and a manufacturing method, which is applied in the optical fiber field, can solve the problems of limited application and low-loss interconnection, etc., and achieves the effects of simple manufacturing method, low cost, and reliable operation.

Active Publication Date: 2015-09-02
SHENZHEN UNIV
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a multi-core optical fiber splitter, which aims to solve the problem of simultaneously outputting the light in the optical fiber due to the very small distance between the cores and the very small size of the existing multi-core optical fiber. And it cannot be interconnected with low loss through various optical devices, and the application is limited

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  • Multi-core fiber demultiplexer and manufacturing method thereof
  • Multi-core fiber demultiplexer and manufacturing method thereof
  • Multi-core fiber demultiplexer and manufacturing method thereof

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] In order to solve the coupling output problem existing in the existing dual-core optical fiber and multi-core optical fiber, the present invention proposes a multi-core optical fiber splitter and a manufacturing method thereof. The multi-core fiber splitter is made of at least two multi-mode optical fibers fused and drawn, and a single-mode optical fiber is connected to the non-double fused drawn-tapered end of the multi-mode optical fiber.

[0023] The first embodiment of the present invention provides a multi-core fiber splitter. The multi-core fiber splitter is made of at least two multi-...

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Abstract

The invention belongs to the technical field of fibers, and provides a multi-core fiber demultiplexer and a manufacturing method thereof. The multi-core fiber demultiplexer includes at least two multi-mode fibers formed by tapering fusion. The non-fused end of each multi-mode fiber is welded to a single-mode fiber through tapering. Single-mode outputs are achieved, the insertion loss is low, and the multi-core fiber demultiplexer is simple in manufacturing method, functions reliably and is low in cost. When the multi-core fiber demultiplexer is a dual-core fiber demultiplexer, the light energy of two parallel fiber cores in a dual-core fiber is output with low loss and also in an optical coupling manner, thus greatly widening applications of the dual-core fiber in the field of sensing and communication. Meanwhile, two large semicircular fiber cores approaching to each other in distance are arranged on the transverse plane of the dual-core fiber demultiplexer, so the dual-core fiber demultiplexer is suitable for both a coupling type dual-core fiber with a small core distance and a non-coupling type dual-core fiber with a big core distance.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, in particular to a multi-core optical fiber splitter and a manufacturing method thereof. Background technique [0002] Multi-core optical fiber is a special optical fiber with special refractive index distribution. It breaks through the refractive index distribution structure of conventional optical fibers, and arranges more than two parallel cores in the cladding of the same optical fiber. Dual-core optical fiber is a kind of multi-core optical fiber, which is divided into two types: coupled dual-core optical fiber and uncoupled dual-core optical fiber. The distance between the two cores of the coupled dual-core fiber is relatively close, and the optical energy is coupled between the two cores in the form of evanescent waves, while the distance between the two cores of the uncoupled dual-core fiber is relatively long, and the optical energy is between the two cores. There is usually no m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/255G02B6/38
CPCG02B6/2553
Inventor 周江涛
Owner SHENZHEN UNIV
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