Method and apparatus for multi-wavelength stable output of line type structure optical fiber laser

A fiber laser, linear structure technology, applied in lasers, laser parts, nonlinear optics, etc., can solve the problems of requiring special fibers, complex and high cost of laser system systems
CN1904710AInactive Publication Date: 2007-01-31ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2007-01-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a multi-wavelength stable output method and its device of linear structure optical fiber laser based on the mixing gain of fiber Raman amplifiers and erbium-doped optical fiber amplifier. It includes optical fiber annular lens, optical coupler, fiber Raman amplifiers, erbium-doped optical fiber amplifier, and Sagnac ring filter. The Sagnac ring filter includes two polarisation controllers whose one end are respectively connected with synthetic end of the 3dB optical coupler. The invention combines the fiber Raman amplifiers and the erbium-doped optical fiber amplifier to restrain wavelength competition characteristic of the latter to realize optical fiber laser multi-wavelength stable output.
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Description

technical field

[0001] The invention belongs to the field of fiber lasers, and in particular relates to a method and equipment for multi-wavelength stable output of a linear structure fiber laser based on the mixed gain of a fiber Raman amplifier and an erbium-doped fiber amplifier. Background technique

[0002] With the development of optical communication technology and fiber optic sensing technology, multi-wavelength fiber lasers have increasingly become a focus of attention. Multi-wavelength fiber lasers have the advantages of multi-wavelength output, low cost, and fiber compatibility, and have important applications in optical communication systems, sensing systems, industrial processing, and monitoring. As the most commonly used erbium-doped fiber laser at present, it faces a difficulty in realizing multi-wavelength operation, that is, the erbium-doped fiber at room temperature has a large uniform gain linewidth (there is a strong gain competition among multiple wavele...

Claims

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