Title :
An Ultralow Noise and Narrow Linewidth λ/4-Shifted DFB Er-Doped Fiber Laser With a Ring Cavity Configuration
Author :
Suzuki, Akihito ; Takahashi, Youhei ; Yoshida, Masato ; Nakazawa, Masataka
Author_Institution :
Tohoku Univ., Sendai
Abstract :
We report a polarization-maintaining lambda/4-shifted distributed feedback (DFB) Er-doped fiber laser with a ring cavity configuration. The ring cavity suppressed the self-pulsation of the stand-alone Er-doped DFB fiber laser. The laser with a 57-m-long ring cavity achieved single-longitudinal-mode operation, a linewidth as narrow as 6 kHz, and relaxation-oscillation-free noise characteristics.
Keywords :
distributed feedback lasers; erbium; fibre lasers; laser cavity resonators; laser modes; laser noise; laser stability; optical fibre polarisation; optical pulse generation; ring lasers; DFB Er-doped fiber laser; frequency 6 kHz; laser noise; narrow linewidth; ring cavity; self-pulsation; single-longitudinal-mode operation; size 57 nm; Bragg gratings; Distributed feedback devices; Erbium-doped fiber lasers; Fiber gratings; Laser feedback; Laser noise; Optical fiber devices; Optical fiber polarization; Optical fibers; Ring lasers; Distributed feedback (DFB) lasers; erbium-doped fiber (EDF); optical fiber lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.902697
