Optical fiber device and manufacturing method thereof

A technology of optical fiber device and manufacturing method, which is applied to laser parts, lasers, cladding fibers, etc., to achieve the effects of overcoming unstable working conditions, improving quality, and overcoming incomplete stripping

Inactive Publication Date: 2020-08-28
WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide an optical fiber device and a manufacturing method thereof to solve or partially solve the problem that existing fiber lasers can only filter out a small part of high-order mode lasers

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  • Optical fiber device and manufacturing method thereof
  • Optical fiber device and manufacturing method thereof
  • Optical fiber device and manufacturing method thereof

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected...

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Abstract

The invention relates to the technical field of high-power optical fiber lasers, and discloses an optical fiber device and a manufacturing method thereof. The manufacturing method of the optical fiberdevice comprises the steps of conducting periodic etching on a working window of a double-clad optical fiber through lasers; and scanning and heating the etched part and tapering the double-clad optical fiber to form periodic gourd-shaped distribution on the double-clad optical fiber. The double-clad optical fiber is tapered into periodic calabash-shaped distribution. Meanwhile, the fiber core also forms the same periodic gourd shape, so that the ratio of the high-order mode laser in the fiber core to the cladding for transmission is increased. The high-order mode laser transmitted in the cladding is easily filtered. Finally, the quality of the output beam of the fiber laser can be well improved. The optical fiber device manufactured through the manufacturing method can solve the problemthat in the prior art, high-order mode laser stripping is incomplete, and can also solve the problems that the working state of an optical fiber laser is unstable, and an output optical fiber has thefailure risk.

Description

technical field [0001] The invention relates to the technical field of high-power fiber lasers, in particular to an optical fiber device and a manufacturing method thereof. Background technique [0002] Fiber lasers are widely used in metal cutting, welding, marking, material processing, and national defense security due to their characteristics of good beam quality, low power consumption, small size, and long life. In particular, the output power of high-power fiber lasers has been increasing year by year, and the maximum single-mode output has exceeded 10,000 watts. In high-power lasers and amplifiers, double-clad doped fibers are used as active fibers, and the pump light is coupled into the fiber core by cladding pumping. Due to the pump coupling involved, there will be some residual pump light in the cladding, and the laser in the core is no longer the fundamental mode light with good beam quality; The light will be converted into high-order modes and leak into the cla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02H01S3/067
CPCG02B6/02342G02B6/02395H01S3/06708H01S3/06733
Inventor 戴立伟闫大鹏曹磊
Owner WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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