Tunable and Switchable Multiwavelength Passively Mode-Locked Fiber Laser Based on SESAM and Inline Birefringence Comb Filter

IEEE Photonics Journal

Ai-Ping Luo¹  Wen-Cheng Xu¹  Zhi-Chao Luo² 

[1] Key Lab. of Photonic Inf. Technol., South China Normal Univ., Guangzhou, China;Key Laboratory of Photonic Information Technology of Guangdong Higher Education Institutes, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, China;

关键词: Multiwavelength fiber lasers;    passively mode-locked;    saturable absorber;    comb filter;   

DOI  :  10.1109/JPHOT.2010.2102012

来源: DOAJ

【 摘 要 】

A tunable and switchable multiwavelength passively mode-locked fiber laser by using a semiconductor saturable absorber mirror (SESAM) and an inline birefringence fiber filter is proposed and demonstrated. By properly rotating the polarization controllers (PCs), up to 7-wavelength mode-locked pulses in 3-dB bandwidth with 3.65-nm channel spacing are obtained. The wavelength switchable operation is determined by the characteristics of the comb filter used in the experiment. Taking advantage of an intensity-dependent loss mechanism caused by the nonlinear polarization rotation (NPR) effect, the mode competition is efficiently suppressed. In addition, the lasing locations of multiwavelength mode-locked pulses can be flexibly tuned via the wavelength-dependent loss mechanism.

【 授权许可】

Unknown