Open AccessFlexibly tunable multiwavelength Raman fiber laser based on symmetrical bending method
Author(s) -
YoungGeun Han,
Dae Seong Moon,
Youngjoo Chung,
Sang Bae Lee
Publication year - 2005
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.006330
Subject(s) - materials science , optics , fiber bragg grating , lasing threshold , raman spectroscopy , laser , fiber laser , raman laser , optoelectronics , extinction ratio , dispersion shifted fiber , wavelength , optical fiber , raman scattering , fiber optic sensor , physics
A practically tunable multiwavelength Raman fiber laser based on few-mode fiber Bragg gratings without additional multichannel filters is investigated. We achieved high quality of the Raman laser output with a high extinction ratio of more than 45 dB. The number of lasing wavelengths can be adjusted by the properties of few-mode Bragg gratings with multiple resonant wavelengths. The lasing wavelength of Raman fiber laser can be readily controlled by the tension and compression strain, which correspond to the directional bending curvature change. The dynamic range of lasing wavelength change was more than 15 nm.