Open AccessMulti-wavelength linear-cavity tunable fiber laser using a chirped fiber Bragg grating and a few-mode fiber Bragg grating
Author(s) -
Dae Seung Moon,
Un-Chul Paek,
Youngjoo Chung,
Xinyong Dong,
Perry Ping Shum
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.005614
Subject(s) - fiber bragg grating , materials science , optics , phosfos , fiber laser , lasing threshold , long period fiber grating , polarization maintaining optical fiber , dispersion shifted fiber , optoelectronics , fiber optic sensor , wavelength , optical fiber , physics
A novel and simple multi-wavelength linear-cavity tunable fiber laser source using a chirped fiber Bragg grating (CFBG) and a few-mode fiber Bragg grating (FMFG) is demonstrated using erbium-doped fiber (EDF) as the gain medium. In our linear-cavity configuration, the FMFG acts as full-reflecting mirror and wavelength selector while the CFBG with the 3-dB bandwidth of over 30 nm acts as a broadband partially reflecting mirror. The number of lasing wavelengths can be controlled by changing the state of polarization inside the cavity using a polarization controller. The large bandwidth of the CFBG enables continuous tuning of the lasing wavelengths by application of mechanical strain or thermal heating on the FMFG.