Title :
Dual-wavelength erbium-doped fiber laser with a simple linear cavity and its application in microwave generation
Author :
Yao, Yu ; Chen, Xiangfei ; Dai, Yitang ; Xie, Shizhong
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A single-longitudinal-mode (SLM) dual-wavelength erbium-doped fiber (EDF) laser based on a simple linear cavity is proposed and demonstrated. The SLM operation is achieved by incorporating a dual-phase-shift fiber grating with two ultranarrow transmission bands. Due to the gain grating produced by spatial hole-burning in the EDF, the proposed linear cavity supports dual-wavelength oscillation at room temperature with a wavelength interval of 27 pm. The laser output is heterodyned on a photodetector and the generated microwave signal has a linewidth <20 kHz without any feedback.
Keywords :
diffraction gratings; erbium; fibre lasers; heterodyne detection; laser cavity resonators; laser modes; microwave generation; optical fibres; optical hole burning; 293 to 298 K; dual-phase-shift fiber grating; dual-wavelength laser; dual-wavelength oscillation; erbium-doped fiber laser; gain grating; heterodyned laser output; linear cavity laser; microwave generation; microwave signal; photodetector; room temperature; single longitudinal mode laser; spatial hole-burning; spectral linewidth; ultranarrow transmission bands; Erbium-doped fiber lasers; Fiber gratings; Filters; Laser feedback; Laser modes; Masers; Microwave generation; Optical fiber communication; Spectroscopy; Temperature; Dual-wavelength fiber laser; gain grating; microwave/millimeter wave generation; phase shift fiber grating; single longitudinal mode (SLM); spatial hole burning;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.861309
