Open AccessSpectral and RIN properties of a single-frequency Raman fiber amplifier co-pumped by ASE source
Author(s) -
Xin Cheng,
Shuzhen Cui,
Xiangfeng Zeng,
Jiaqi Zhou,
Yang Feng
Publication year - 2021
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.424063
Subject(s) - amplified spontaneous emission , laser linewidth , relative intensity noise , optics , materials science , raman amplification , spontaneous emission , fiber laser , full width at half maximum , raman spectroscopy , optical amplifier , laser , amplifier , noise (video) , optoelectronics , semiconductor laser theory , physics , cmos , artificial intelligence , computer science , image (mathematics)
Spectral and relative intensity noise (RIN) characteristics of a single-frequency Raman fiber amplifier co-pumped by amplified spontaneous emission (ASE) sources are investigated experimentally. Due to the relatively lower intensity noise of ASE sources compared to usual fiber laser pumps, the full width at half maximum (FWHM) linewidth of the signal laser increases negligibly. But there is significant increase in RIN and spectral wings due to the noise transfer at high frequency from the ASE source during the Raman amplification. The deterioration can be suppressed to some extent with ASE of broader linewidth, which has lower intensity noise.