Open AccessHigh-efficiency Brillouin random fiber laser using all-polarization maintaining ring cavity
Author(s) -
Liang Zhang,
Chen Wang,
Zhengying Li,
Yingke Xu,
Bhavaye Saxena,
Song Gao,
Liang Chen,
Xiaoyi Bao
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.011306
Subject(s) - optics , lasing threshold , brillouin scattering , laser linewidth , materials science , fiber laser , relative intensity noise , phase noise , laser , physics , semiconductor laser theory
We report a high-efficiency (25%) Brillouin random fiber laser (BRFL) with Brillouin gain medium of 2-km polarization maintaining fiber (PMF) as well as distributed Rayleigh scattering feedback from 500-m PMF. The characteristics of lasing efficiency and relative intensity noise (RIN) have been comprehensively studied comparing with the BRFLs with half-open ring cavity and bidirectional pumping linear open configuration. The enhanced lasing efficiency using PMF-BRFL with half-open ring cavity enables sub-kHz linewidth, lower phase fluctuation and frequency jitter comparing with phase locked pump laser, thanks to the polarization-matched efficient Brillouin gain in PMFs. The RIN and frequency instability of the proposed PMF-BRFL induced from external disturbance, e.g., mechanical and thermal noise, have been effectively suppressed with respect to conventional SMF-based BRFL.