Open AccessStimulated Brillouin scattering suppression of thulium-doped fiber amplifier with fiber superfluorescent seed source
Author(s) -
Chen Liu,
Jiang Liu,
Yijing Zhang,
Yanbing Hou,
Shuxian Qi,
Xian Feng,
Pu Wang
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.009569
Subject(s) - laser linewidth , materials science , brillouin scattering , optics , fiber laser , double clad fiber , dispersion shifted fiber , thulium , slope efficiency , amplifier , polarization maintaining optical fiber , laser power scaling , optoelectronics , optical fiber , laser , wavelength , fiber optic sensor , doping , physics , cmos
We investigate the stimulated Brillouin scattering (SBS) effect in high-power thulium-doped fiber amplifier seeded with a narrow-linewidth fiber superfluorescent source or a conventional narrow-linewidth fiber laser. No random backward SBS pulses are observed when using a narrow-linewidth fiber superfluorescent source as the seed. The corresponding average power and peak power reach 153 W and 3.4 kW, respectively, only limited by the available pump power. This gives the average power and peak power extraction from the thulium-doped fiber amplifier with 17 fold enhancement, in comparison with the situation using the conventional narrow-linewidth fiber laser with similar central wavelength and spectral linewidth as the seed. This work indicates that using low coherent fiber superfluorescent sources is a good solution for power scaling in narrow-linewidth fiber amplifier system in order to overcome the limitation of SBS effect.