摘要
A new structure of short-cavity random fiber laser(RFL) with narrow linewidth lasing is proposed. Aπ-phase-shifted fiber Bragg grating(FBG) loop mirror was used in the RFL for spectral filtering and to suppress multi-mode oscillation due to the narrow transmission window. The random feedback of the RFL was implemented by a randomly dispersed weak reflection FBG array. The high gain of the erbium-doped fiber and a half-open cavity design results in a low lasing threshold. The linewidth of the laser was 225 Hz with58 d B side-mode-suppression ratio. The laser threshold was 4.5 mW, and the optical signal-to-noise ratio was up to 63 dB.
A new structure of short-cavity random fiber laser(RFL) with narrow linewidth lasing is proposed. Aπ-phase-shifted fiber Bragg grating(FBG) loop mirror was used in the RFL for spectral filtering and to suppress multi-mode oscillation due to the narrow transmission window. The random feedback of the RFL was implemented by a randomly dispersed weak reflection FBG array. The high gain of the erbium-doped fiber and a half-open cavity design results in a low lasing threshold. The linewidth of the laser was 225 Hz with58 d B side-mode-suppression ratio. The laser threshold was 4.5 mW, and the optical signal-to-noise ratio was up to 63 dB.
作者
Shuaijie Miao
Wentao Zhang
Ying Song
苗帅杰;张文涛;宋颖(School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Optoelectrorzic System Laboratory,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China)
基金
supported by the National Key R&D Program of China(No.2017YFB0405503)
the Youth Innovation Promotion Association of CAS(No.2016106)
the National Natural Science Foundation of China(No.61875185)
the Innovation Project of Shijiazhuang Tiedao University(No.YC2019049)
