Tunable Multiwavelength Passively Mode-Locked Fiber Ring Laser Using Intracavity Birefringence-Induced Comb Filter

A simple configuration for the generation of tunable multiwavelength picosecond-pulse fiber ring lasers by exploiting the intracavity birefringence-induced comb filter is demonstrated. The fiber laser is passively mode locked by using nonlinear polarization rotation (NPR) technique. The polarization...

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Bibliographic Details
Published in:IEEE photonics journal 2010-08, Vol.2 (4), p.571-577
Main Authors: Luo, Zhi-Chao, Luo, Ai-Ping, Xu, Wen-Cheng, Yin, Hai-Sen, Liu, Jia-Rui, Ye, Qing, Fang, Zu-Jie
Format: Article
Language:English
Subjects:
Birefringence
birefringence filter
Erbium-doped fiber lasers
Fiber lasers
Fibers
Filters
Isolators
Laser mode locking
Lasing
Multiwavelength lasers
Optical fiber polarization
Optical pulse generation
Optical pulses
passively mode-locked
Picosecond pulses
Polarization
Ring lasers
Tunable circuits and devices
Wavelengths
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Summary:A simple configuration for the generation of tunable multiwavelength picosecond-pulse fiber ring lasers by exploiting the intracavity birefringence-induced comb filter is demonstrated. The fiber laser is passively mode locked by using nonlinear polarization rotation (NPR) technique. The polarization-dependent isolator combined with the intracavity birefringence acts as two functions: the tunable comb filter and the mode locker. Up to four-wavelength picosecond pulses were simultaneously obtained in the experiment. The mode competition of the multiwavelength lasing is suppressed by the use of NPR-induced intensity-dependent loss. In addition, the number of the lasing wavelengths, the lasing location, and the spacing between the lasing wavelengths could be flexibly tuned by properly rotating the polarization controllers.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2010.2051023