Open AccessRoute to stable dispersion-managed mode-locked Yb-doped fiber lasers with near-zero net cavity dispersion
Author(s) -
Dongyu Yan,
Bowen Liu,
Jie Guo,
Meng Zhang,
Yuxi Chu,
Yafei Song,
Minglie Hu
Publication year - 2020
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.403456
Subject(s) - optics , materials science , fiber laser , fiber bragg grating , dispersion (optics) , mode locking , dispersion shifted fiber , laser , optical fiber , physics , fiber optic sensor
We numerically investigate the stability of a dispersion-managed mode-locked Yb-doped fiber laser of near-zero net cavity dispersion. The instability is primarily due to the filtering effect of the chirped fiber Bragg grating. The size of the unstable region is dependent on the modulation depth of the saturable absorbers. At modulation depth higher than 30%, stable mode-locking can operate throughout the dispersion region. Based on the simulation results, stable mode-locking around zero cavity dispersion is experimentally viable by a SESAM with a 34% modulation depth. The fiber laser can generate laser pulses with a 17-nm spectral bandwidth and a 139-fs dechirped pulse duration.