Open AccessResearch on a novel composite structure Er^3+-doped DBR fiber laser with a π-phase shifted FBG
Author(s) -
Yuchen Zhao,
Jun Chang,
Qingpu Wang,
Jiasheng Ni,
Zi-Xia Song,
Haiyu Qi,
Chang Wang,
Pengpeng Wang,
Liang Gao,
Zhihui Sun,
Guangping Lv,
Tongyu Liu,
Gang-Ding Peng
Publication year - 2013
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.21.022515
Subject(s) - materials science , laser linewidth , optics , fiber laser , fiber bragg grating , lasing threshold , laser , photonic crystal fiber , polarization maintaining optical fiber , dispersion shifted fiber , optoelectronics , optical fiber , fiber optic sensor , wavelength , physics
A simple composite cavity structure Er³⁺-doped fiber laser was proposed and demonstrated experimentally. The resonant cavity consists of a pair of uniform fiber Bragg gratings (FBGs) and a π-phase shifted FBG. By introducing the π-phase shifted FBG into the cavity as the selective wavelength component, it can increase the effective length of the laser cavity and suppress the multi-longitudinal modes simultaneously. The narrow linewidth of 900 Hz and low RIN of -95 dB/Hz were obtained. And the lasing wavelength was rather stable with the pump power changing. The SMRS was more than 67 dB. The results show that the proposed fiber laser has a good performance and considerable potential application for fiber sensor and optical communication.