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Optical fiber winding structure

A technology of optical fiber coiling and optical fiber, which is applied in the direction of conveying filamentous materials, thin material processing, transportation and packaging, etc., can solve the problems of mode degradation and achieve the effect of continuous mode degradation and suppression of mode degradation

Active Publication Date: 2018-11-06
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0004] However, in the process of high-power laser amplification of fiber lasers, there is a problem that the mode is significantly degraded

Method used

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  • Optical fiber winding structure
  • Optical fiber winding structure
  • Optical fiber winding structure

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Embodiment

[0042] In the process of high-power laser amplification, fiber lasers have the problem of significant mode degradation.

[0043] In order to solve the above problem, all the gain amplification fibers can be coiled to a predetermined diameter so that the high-order mode overflows to achieve mode degradation suppression.

[0044] For example, it is possible to wind the optical fiber from the inside to the outside through a disk-coiled structure. However, from the inner side to the outer side of this method, the coiling diameter becomes larger and larger. When the coiling diameter is larger than the effective mode selection diameter, the mode selection function in the fiber gain process can no longer be realized. Therefore, this method cannot realize the equal-radius mode selection of the entire section of the gain fiber, which has obvious shortcomings.

[0045] It is also possible to use a cylindrical coiling mode selection structure. This design uses grooves on the cylindrical...

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Abstract

The invention provides an optical fiber winding structure and belongs to the technical field of optical fiber lasers. The optical fiber winding structure comprises a winding main body. The outer diameters of the whole winding main body are the same, a continuous groove channel is formed in the outer surface of the winding main body and spirally formed in the circumferential direction of the winding main body, the groove wall of the groove channel forms a limiting mechanism, and the limiting mechanism is used for limiting radial movement of an optical fiber. When the optical fiber winding structure is used, the optical fiber is mounted and spirally wound in the groove channel. Since the outer diameters of the winding main body are the same, it is guaranteed that the winding diameter of thefull section of the optical fiber in an effective mold selecting length is kept unchanged, and the winding section is continuous and enables mode degradation to be inhibited. In addition, since the groove wall of the groove channel forms the limiting mechanism, and the limiting mechanism can limit radial movement of the optical fiber, the phenomenon of optical fiber cracking is not prone to occurring when the optical fiber is mounted in the groove channel and restrained.

Description

technical field [0001] The present invention relates to the technical field of fiber lasers, and in particular, to an optical fiber coiling structure. Background technique [0002] Lasers can be divided into gas lasers, liquid lasers, fixed lasers, semiconductor lasers and fiber lasers according to the classification of working substances. [0003] Among them, fiber lasers are lasers that use optical fibers as working materials. The most widely studied and used fiber lasers are rare-earth-doped fiber lasers that use rare-earth element-doped fibers as working materials. It has the following advantages: the flexibility of the glass fiber can bring about miniaturization and intensification; a broadband tunable laser output can be obtained; the scattering conversion efficiency is high, and the laser threshold is low. [0004] However, in the process of high-power laser amplification, fiber lasers have the problem of significant mode degradation. SUMMARY OF THE INVENTION [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H54/48
CPCB65H54/48B65H2701/34Y02P40/57
Inventor 罗韵王旗华邹东洋温静李成钰王琳史仪杨先衡游云峰欧阳丽娥赵鹏飞王建军景峰
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS