Title :
Wavelength-tunable narrow-linewidth semiconductor fiber-ring laser
Author :
Hu, Zhaoyang ; Li, Fuying ; Pan, Zhenwu ; Tan, Wei
Author_Institution :
Dept. of Precision Instrum., Tsinghua Univ., Beijing, China
Abstract :
A passive sub-ring was inserted into a semiconductor fiber-ring laser as the Vernier configuration to enable stable lasing spectrum. Wavelength tuning over 20 nm and fine tuning of less than 0.0001 nm were obtained by rotating the polarization controller and adjusting the voltage on the phase modulator, respectively. A narrow linewidth of less than 10 kHz and a sidemode suppression ratio of higher than 35 dB were demonstrated with single longitudinal-mode operation.
Keywords :
fibre lasers; laser beams; laser cavity resonators; laser modes; laser tuning; light polarisation; optical fibre amplifiers; optical fibre couplers; optical modulation; phase modulation; ring lasers; semiconductor optical amplifiers; travelling wave amplifiers; 10 kHz; Vernier configuration; fiber-ring laser; fine tuning; linewidth; passive sub-ring; phase modulator; polarization controller; semiconductor fiber-ring laser; semiconductor optical amplifier; sidemode suppression ratio; single longitudinal-mode operation; stable lasing spectrum; wavelength tuning; wavelength-tunable narrow-linewidth laser; wavelength-tunable narrow-linewidth semiconductor fiber-ring laser; Fiber lasers; Isolators; Laser tuning; Optical fiber communication; Optical fiber polarization; Optical fiber sensors; Optical tuning; Ring lasers; Semiconductor lasers; Semiconductor optical amplifiers;
Journal_Title :
Photonics Technology Letters, IEEE
