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Fiber device and its manufacturing method

An optical fiber device and manufacturing method technology, applied in the field of fiber lasers, can solve the problem that the cladding optical stripper and the optical fiber disk cannot meet the laser power requirements, etc., so as to improve the cladding optical loss coefficient, optimize the beam quality, and improve the power damage threshold. Effect

Inactive Publication Date: 2017-03-01
CHINA WEAPON EQUIP RES INST
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Problems solved by technology

[0009] Obviously, the above two devices, that is, the cladding light stripper and the optical fiber disk, cannot meet the increasing laser power requirements

Method used

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  • Fiber device and its manufacturing method
  • Fiber device and its manufacturing method
  • Fiber device and its manufacturing method

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] An optical fiber device and a manufacturing method thereof provided by the present invention can perform cladding light stripping and core laser high-order mode rejection in an integrated manner, thereby improving the cladding light loss coefficient, increasing the power damage threshold of cladding light stripping, and optimizing the optical fiber The beam quality of the core laser is suitable as a high-power all-fiber laser cascade device, or integrated with a fiber end cap. The specific steps of the manufacturing method of this kind of optical fiber device are as follows:

[0033] A. One end of the optical fiber composed of the cladding and the fiber core is subjected to high-temperature treatment and tapered. If the fiber...

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Abstract

The invention discloses a fiber device and its manufacturing method. First, one end of an optical fiber composed of a cladding layer and an optical fiber core experiences high temperature treatment and forms a tapered cone, and then the tapered cone part of the optical fiber undergoes heating through the TEC technique, and then the surface of the optical fiber is coated with glue. And finally, the optical fiber is refrigerated. According to the optical fiber device and its manufacturing method, it is possible to manufacture an integrated optical fiber device capable of conducting light deprivation from a cladding layer and removing the high-order mode of fiber core laser so as to increase the cladding layer's light loss coefficient and the power damage threshold value of light deprivation from the cladding layer, and to optimize the quality of fiber core laser beams, making the device suitable to serve as a large power all-fiber laser cascade device or to be integrated with an optical fiber end cap.

Description

technical field [0001] The invention relates to the technical field of optical fiber lasers, in particular to an optical fiber device and a manufacturing method thereof. Background technique [0002] With the development of fiber lasers, their power has gradually increased. However, there are still two key factors restricting their development: [0003] First, the cladding contains high-power stray light, including: ⑴ residual pump light that is not effectively absorbed by the gain fiber, ⑵ core signal laser leaked at the melting point of the fiber, and ⑶ high-order mode of the core laser during transmission due to Leakage due to changes in waveguide conditions, etc. For a kilowatt-class fiber laser, the stray light power in the cladding is around 200W. At present, the cladding optical stripper developed by traditional technology is difficult to meet the development needs of kilowatt-class fiber lasers. [0004] Canadian ITF company is in the global leading position in th...

Claims

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Application Information

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IPC IPC(8): H01S3/067G02B6/255
Inventor 李松柏史俊锋张帆张志强李晔尹聿海马长正蔡岳李川孙涛
Owner CHINA WEAPON EQUIP RES INST