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Title:
ALL-FIBER TRANSVERSE MODE SWITCHABLE HIGH-ORDER MODE BRILLOUIN LASER
Document Type and Number:
WIPO Patent Application WO/2019/233012
Kind Code:
A1
Abstract:
An all-fiber transverse mode switchable high-order mode Brillouin laser. The laser comprises a narrow linewidth pump laser (1), an optical amplifier (2), a 1*N optical switch (3) where (N ≥ 2), an optical fiber mode selection coupler group, a first polarization controller (7), a fiber optic circulator (8), a fiber optic coupler (9), a second polarization controller (10), and a few-mode fiber (11). Utilizing a Brillouin nonlinear gain of the few-mode fiber (11) in an annular cavity, the invention realizes resonance amplification of a specific order of a transverse mode in a cavity, thereby obtaining a transverse mode switchable high-order mode laser output. An all-fiber structure is used. The application has the advantages of a simple structure, low costs, being easy to integrate an optical fiber system, good stability of laser output, and narrow linewidth, improving the practicality and reliability of high-order mode lasers.

Inventors:
GAN, Jiulin (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
HENG, Xiaobo (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
YANG, Zhongmin (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
ZHANG, Zhishen (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
Application Number:
CN2018/110443
Publication Date:
December 12, 2019
Filing Date:
October 16, 2018
Export Citation:
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Assignee:
SOUTH CHINA UNIVERSITY OF TECHNOLOGY (No. 381 Wushan Road, Tianhe DistrictGuangzhou, Guangdong 0, 510640, CN)
International Classes:
H01S3/094; H01S3/067; H01S3/30; H01S5/04
Foreign References:
CN108551075A2018-09-18
CN108051890A2018-05-18
CN107834351A2018-03-23
US20170302048A12017-10-19
Other References:
HENG, XIAOBO ET AL.: "Transverse Mode Switchable All-Fiber Brillouin Laser", OPTICS LETTERS, vol. 43, no. 17, 24 August 2018 (2018-08-24) - 1 September 2018 (2018-09-01), pages 4172 - 4175, XP055664844
CHEN, JIALI ET AL.: "Refractive Index Fiber Sensor Based on Brillouin Fast Light", THE JAPAN SOCIETY OF APPLIED PHYSICS - APPLIED PHYSICS EXPRESS, vol. 7, no. 012501, 18 December 2013 (2013-12-18) - 2014, pages 012501-1 - 012501-3, XP055664848
REN, FANG ET AL.: "Spatial-Mode Switchable Ring Fiber Laser Based on Low Mode-Crosstalk All-Fiber Mode MUX/DEMUX", OPTICS AND LASER TECHNOLOGY, vol. 101, 10 November 2017 (2017-11-10), pages 21 - 24, XP085336097, DOI: 10.1016/j.optlastec.2017.10.034
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (1st Floor, Material Building No. 381 Wushan Road, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
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