Open AccessPhase locking of three fiber lasers using an all-fiber coupling loop
Author(s) -
Bing Lei,
Yan Feng,
Zejin Liu
Publication year - 2008
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.57.6419
Subject(s) - fiber laser , optics , coupling (piping) , materials science , fiber , dispersion shifted fiber , polarization maintaining optical fiber , laser , optical fiber , optoelectronics , fiber optic sensor , physics , metallurgy , composite material
An all-fiber coupling loop is constructed by three 2×2 fiber couplers according to certain rules, which connects three independent erbium-doped fiber lasers to form a coupled array. Thanks to the specially designed all-fiber coupling loop, the total loss of the phase locking array is reduced remarkably, and effective mutual injection coupling occurs between the component fiber lasers, so that the phase locking of the array is achieved. The far field interference patterns and output spectrum observed in experiment indicate that the array has achieved phase locking states. When the pump power of three component fiber lasers is 100mW each, the phase locking array gives 94mW stable coherent output.