Title :
Stable High SNR Narrow Linewidth Linear Cavity Single-Wavelength Er-Doped Fiber Laser
Author :
Feng, Ting ; Yan, Fengping ; Li, Qi ; Peng, Wanjing ; Tan, Siyu ; Feng, Suchun ; Wen, Xiaodong
Author_Institution :
Key Lab. of All Opt. Networl & Adv. Telecommun. Network of Minist. of Educ., Beijing Jiaotong Univ., Beijing, China
Abstract :
A stable high signal to noise ratio (SNR) narrow linewidth linear cavity single-wavelength Er-doped fiber laser is reported. In the experiment, we used a fiber Bragg grating Fabry-Perot (FBG F-P) etalon and a Fiber Loop Mirror (FLM) as the reflectors of the laser cavity, and used a length of 4m Er-doped fiber as the saturable absorber to suppress mode hopping and stabilize frequency effectively. An all fiber polarization controller (PC) was used to restrain spatial hole burning effect in gain fiber. Using a length of 3m Er-doped fiber pumped by a laser diode at 975nm, stable single-wavelength laser at 1544.714nm was acquired, and the 3dB linewidth of laser was 0.013nm. The corresponding threshold of laser was 30mW, the SNR was as high as 70dB, and the slope efficiency was about 0.5%.
Keywords :
Bragg gratings; Fabry-Perot interferometers; erbium; fibre lasers; laser beams; laser cavity resonators; laser frequency stability; laser mirrors; laser modes; laser noise; optical control; optical fibre polarisation; optical hole burning; optical pumping; optical saturable absorption; spectral line narrowing; FBG FP etalon; FLM; Fabry-Perot etalon; PC; fiber Bragg grating; fiber loop mirror; fiber polarization controller; frequency stability; gain fiber; laser cavity; laser diode pumping; laser threshold; mode hopping suppression; power 30 mW; reflectors; saturable absorber; signal-to-noise ratio; single-wavelength Er-doped fiber laser; size 3 m; slope efficiency; spatial hole burning effect; stable high SNR narrow linewidth linear cavity; stable single-wavelength laser; wavelength 1544.714 nm; wavelength 975 nm; Cavity resonators; Fiber lasers; Optical fiber communication; Optical fiber couplers; Optical fiber devices; Optical fiber polarization; Semiconductor lasers;
Conference_Titel :
Photonics and Optoelectronics (SOPO), 2012 Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0909-8
DOI :
10.1109/SOPO.2012.6270431
