Title :
Dual-Wavelength DFB Fiber Laser Based on Unequalized Phase Shifts
Author :
Sun, Jie ; Dai, Yitang ; Zhang, Yejin ; Chen, Xiangfei ; Xie, Shizhong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
A novel structure for dual-wavelength distributed feedback (DFB) fiber laser is proposed and experimentally demonstrated. This structure is based on a uniform fiber Bragg grating with two unequalized phase shifts, which markedly suppress the mode competition of the two lasing wavelengths; and then a 52-pm-spaced dual-wavelength DFB fiber laser operating at single-longitudinal-mode and single-polarization is achieved at room temperature. A simple method is also implemented to fabricate the phase shifts with high precision
Keywords :
Bragg gratings; distributed feedback lasers; fibre lasers; laser modes; optical fibres; DFB fiber laser; fiber Bragg grating; mode competition suppression; single-longitudinal mode; unequalized phase shifts; Distributed feedback devices; Erbium-doped fiber lasers; Fiber gratings; Fiber lasers; Laser feedback; Laser modes; Masers; Optical fiber polarization; Power distribution; Power lasers; Distributed feedback (DFB); dual-wavelength fiber laser; fiber Bragg grating (FBG); lasing power distribution; phase shift;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887222
