Title :
Dual-Wavelength DFB Fiber Laser Based on a Chirped Structure and the Equivalent Phase Shift Method
Author :
Dai, Yitang ; Chen, Xiangfei ; Sun, Jie ; Yao, Yu ; Xie, Shizhong
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
Abstract :
A chirped phase-shifted structure is demonstrated for compact multiwavelength distributed feedback (DFB) fiber laser at room temperature for the first time. The chirped structure provides separated resonance cavities and then the stable multiwavelength operation. The equivalent phase shift method is demonstrated to realize the desired chirp and phase shifts simply and flexibly. A 44-pm-spaced dual-wavelength DFB fiber laser is then achieved experimentally, which is the narrowest spacing ever reported for a compact multiwavelength fiber laser
Keywords :
chirp modulation; distributed feedback lasers; fibre lasers; laser cavity resonators; laser stability; chirped phase shift method; dual-wavelength DFB fiber laser; resonance cavities; spacing; Bragg gratings; Chirp; Distributed feedback devices; Erbium-doped fiber lasers; Fiber gratings; Fiber lasers; Laser feedback; Masers; Optical fiber communication; Optical resonators; Distributed feedback (DFB); dual-wavelength fiber laser; fiber lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.882282
