Open AccessFabrication of chirped and tilted fiber Bragg gratings and suppression of stimulated Raman scattering in fiber amplifiers
Author(s) -
Meng Wang,
Yujing Zhang,
Zefeng Wang,
Jian Sun,
Jianqiu Cao,
Jinyong Leng,
Xiaodong Gu,
Xiaojun Xu
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.25.001529
Subject(s) - optics , materials science , fiber bragg grating , raman scattering , fiber laser , raman spectroscopy , polarization maintaining optical fiber , phosfos , amplifier , dispersion shifted fiber , laser , optical amplifier , optoelectronics , fiber , photonic crystal fiber , long period fiber grating , fiber optic sensor , optical fiber , physics , cmos , composite material
Stimulated Raman scattering (SRS) is one of the main limits for fiber lasers further power scaling. We report on the suppression of the stimulated Raman scattering in fiber laser amplifier using chirped and tilted fiber Bragg gratings (CTFBGs) for the first time. In this paper, we design and fabricate a CTFBG used to suppress the SRS in 1090 nm fiber laser output, and establish a system to test the effect of suppression. A maximum suppression ratio nearly 25 dB is achieved. Experimental results demonstrate that CTFBGs can increase the Raman threshold and promote the slope efficiency of the whole system, which is significant for further power scaling in high power oscillators and amplifiers.