Open AccessTheoretical study of two-tone single frequency fiber amplifier with gain competition
Author(s) -
Weidong Du,
Jinyong Leng,
Zhu Jia-Jian,
Pu Zhang,
Xiaojun Xu,
Bohong Shu
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.114203
Subject(s) - amplifier , optics , brillouin scattering , fiber amplifier , physics , dispersion shifted fiber , optical amplifier , materials science , fiber laser , optical fiber , optoelectronics , laser , fiber optic sensor , cmos
Introducing the gain competition is an effective way to suppress stimulated Brillouin scattering (SBS) in single frequency fiber amplifier. Steady rate equation describing two-tone single frequency Yb-doped double cladding fiber amplifier with gain competition is deduced based on single frequency amplifier. A theoretical model of this kind of amplifier is set up. With this model, simulation is performed to analyze the influences of wavelength difference between signals, signal power ratio, pump configuration and length of gain fiber on output efficiency of single frequency laser, and the effect of SBS suppression.