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

Volume

47

Issue

20

fYear

2011

Firstpage

1145

Lastpage

1146

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;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2011.2225

Filename

6036069