Ultra-narrow line width optical fiber laser device based on Rayleigh scattering and stimulated brillouin scattering

A fiber laser, stimulated Brillouin technology, applied in the direction of lasers, laser components, laser scattering effect, etc., can solve the single longitudinal mode laser with high cost, unsatisfactory line width compression effect, and limited ultra-narrow line width Beam application and other issues, to achieve the effect of simple structure

Inactive Publication Date: 2016-02-24
CHONGQING UNIV
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Problems solved by technology

[0003] In the prior art, there are various methods for forming ultra-narrow linewidth single longitudinal mode laser beams, such as short-cavity methods, saturable absorbers, multi-ring ring cavities, etc., but most of the lasers based on the aforementioned methods have complex structures, The defects of large volume, high cost, and unsatisfactory linewidth compression effect greatly limit the application of ultra-narrow linewidth single longitudinal mode laser beams

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  • Ultra-narrow line width optical fiber laser device based on Rayleigh scattering and stimulated brillouin scattering

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Embodiment Construction

[0013] An ultra-narrow linewidth fiber laser based on Rayleigh scattering and stimulated Brillouin scattering, the structure of which is: the ultra-narrow linewidth fiber laser consists of a light source 1, a first three-port circulator 2, a Brillouin scattering fiber 3. Composed of polarization controller 4, second three-port circulator 5, Rayleigh scattering fiber 6 and fiber Bragg grating 7;

[0014] The light source 1 adopts a single longitudinal mode laser; the output end of the light source 1 is connected to the input end of the first three-port circulator 2, and the transceiver multiplexing end of the first three-port circulator 2 is connected to one end of the Brillouin scattering fiber 3 , the other end of the Brillouin scattering fiber 3 is connected to the output end of the second three-port circulator 5; the output end of the first three-port circulator 2 is connected to the input end of the polarization controller 4, and the output end of the polarization controlle...

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Abstract

The invention provides an ultra-narrow-line-width optical fiber laser device based on Rayleigh scattering and stimulated brillouin scattering. The ultra-narrow-line-width optical fiber laser device is innovatively characterized by being composed of a light source, a first three-port circulator, a Rayleigh scattering optical fiber, a polarization controller, a second three-port circulator, a Rayleigh scattering optical fiber and a Bragg optical fiber optical grating. The ultra-narrow-line-width optical fiber laser device has the beneficial effects that the ultra-narrow-line-width optical fiber laser device has a simple structure and has double compression effect on line width of brillouin scattering light, so that the ultra-narrow-line-width brillouin scattering light can be output.

Description

technical field [0001] The invention relates to a laser output line width compression technology, in particular to an ultra-narrow line width fiber laser based on Rayleigh scattering and stimulated Brillouin scattering. Background technique [0002] The single longitudinal mode laser beam with ultra-narrow linewidth is a high-quality light source with extremely low phase noise and ultra-long coherence length. It has broad applications in the fields of optical fiber sensing, optical fiber communication, laser radar, and distributed oil pipeline detection. prospect. [0003] In the prior art, there are various methods for forming ultra-narrow linewidth single longitudinal mode laser beams, such as short-cavity methods, saturable absorbers, multi-ring ring cavities, etc., but most of the lasers based on the aforementioned methods have complex structures, The defects of large volume, high cost, and unsatisfactory linewidth compression effect greatly limit the application of ult...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/30H01S3/094H01S3/067
CPCH01S3/302H01S3/06791H01S3/094042
Inventor 朱涛黄仕宏史磊磊
Owner CHONGQING UNIV
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