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

A. P. Luo*, Z. C. Luo, W. C. Xu, V. V. Dvoyrin, V. M. Mashinsky, E. M. Dianov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate a tunable and switchable dual-wavelength 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).

Original languageEnglish
Pages (from-to)601-605
Number of pages5
JournalLaser Physics Letters
Volume8
DOIs
Publication statusPublished - 1 Jun 2011

Keywords

  • Bismuth fiber
  • Dual-wavelength
  • Fiber laser
  • Passive mode-locking

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