Title :
Stable multiwavelength erbium-doped fibre laser using intensity-dependent loss mechanism with short cavity length
Author :
Luo, Zhi-Chao ; Luo, Ai-Ping ; Xu, Wen-Cheng
Author_Institution :
Key Lab. of Photonic Inf. Technol. of Guangdong Higher Educ. Inst., Sch. of Inf. & Optoelectron. Sci. & Eng., South China Normal Univ., Guangzhou, China
Abstract :
A simple and stable multiwavelength fibre laser using an intensity-dependent-loss mechanism with a short cavity length is demonstrated. By employing a semiconductor saturable absorber mirror in the cavity to passively modelock the lasing wavelengths, the nonlinear polarisation rotation-induced intensity-dependent-loss is greatly enhanced, which can be used to suppress the mode competition. In the experiment, up to 10 wavelength stable lasing lines in a 3 dB bandwidth with 0.8 nm channel spacing were obtained and the maximum power fluctuation was 0.98 dB.
Keywords :
channel spacing; erbium; fibre lasers; fluctuations; laser cavity resonators; laser mirrors; laser mode locking; laser stability; light polarisation; optical fibre losses; optical saturable absorption; channel spacing; nonlinear polarisation rotation-induced intensity-dependent-loss; passively modelocking; power fluctuation; semiconductor saturable absorber mirror; short cavity length; size 0.8 nm; stable multiwavelength erbium-doped fibre laser; wavelength stable lasing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.2225
