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Intrinsic dual-wavelength operation of a passively mode-locked fiber ring laser

✍ Scribed by Huiwen Xu; Hua Yang; Yong Chen; Shuangchun Wen; Dajun Lei; Lifu Zhang

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
564 KB
Volume
282
Category
Article
ISSN
0030-4018

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✦ Synopsis

We report on the dual-wavelength operation in an erbium-doped fiber ring laser mode-locked through nonlinear polarization rotation technique. In addition to dual-wavelength continuous wave operation, alternative mode-locking at the dual wavelengths was realized experimentally. By analyzing the transmissivity of the laser cavity, we find the dual-wavelength operation is an intrinsic feature of the laser associating with the dispersive cavity loss. Numerical simulations confirm the experimental and theoretical results and further demonstrate that the location of the dual wavelengths and the separation between them closely depend on the cavity birefringence and the profile of the gain medium.

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