Journal
OPTICS COMMUNICATIONS
Volume 282, Issue 22, Pages 4408-4412Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2009.08.002
Keywords
Dual-wavelength; Erbium-doped fiber lasers; Passively mode-locked; Nonlinear polarization rotation
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Funding
- Natural Science Foundation of Guangdong Province, China [04010397]
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A simple switchable and tunable dual-wavelength passively mode-locked erbium-doped fiber ring laser based on nonlinear polarization rotation (NPR) effect is proposed and experimentally demonstrated. The NPR effect effectively induces wavelength- and intensity-dependent loss to readily implement stable dual-wavelength passively mode-locked operation. The wavelength switching and tuning of the dual-wavelength ultrashort pulse laser are achieved only by appropriately rotating the polarization controllers. The side-mode suppression ratio of the output pulse is larger than 41 dB over a wavelength-tuning range of 43.4 nm. Moreover, triple-wavelength ultrashort pulse can also be observed. (c) 2009 Published by Elsevier B.V.
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