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Tunable and switchable dual-wavelength passively mode-locked Bi-doped all-fiber ring laser based on nonlinear polarization rotation

✍ Scribed by A.-P. Luo; Z.-C. Luo; W.-C. Xu; V.V. Dvoyrin; V.M. Mashinsky; E.M. Dianov

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
140 KB
Volume
8
Category
Article
ISSN
1612-2011

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✦ Synopsis

We demonstrate a tunable and switchable dualwavelength passively mode-locked Bi-doped all-fiber ring laser by using nonlinear polarization rotation (NPR) technique. Exploiting the spectral filtering effect caused by the combination of the polarizer and intracavity birefringence, the wavelength separation of dual-wavelength mode-locked pulses can be flexibly tuned between 2.38 and 20.45 nm. Taking the advantage of NPR-induced intensity-dependent loss to suppress the mode competition, the stable dual-wavelength pulses output is obtained at room temperature. Moreover, the dual-wavelength switchable operation is achieved by simply rotating the polarization controllers (PCs).

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