Single-polarization, dual-wavelength mode-locked Yb-doped fiber laser by a 45°-tilted fiber grating

Xianglian Liu, Hushan Wang, Yishan Wang, Zhijun Yan, Lin Zhang

Research output: Contribution to journalArticle

Abstract

We experimentally demonstrate an all-fiber single-polarization dual-wavelength Yb-doped fiber laser passively mode-locked with a 45°-tilted fiber grating for the first time. Stable dual-wavelength operation exhibits double-rectangular spectral profile centered at 1033 and 1053 nm, respectively. The 3 dB bandwidth of each rectangular optical spectrum is estimated as 10 nm. The separation of two fundamental repetition rates is 6 kHz. By employing the 45° TFG with the polarization-dependent loss of 33 dB, output pulses with 27 dB polarization extinction ratio are implemented in the experiment. The single pulse centered at 1053 nm is researched by using a filter at the output port of the laser, and the experimental results denote that the output ps pulses are highly chirped. The formation mechanism of dual-wavelength operation is investigated.

Original languageEnglish
Article number065102
Number of pages5
JournalLaser Physics Letters
Volume12
Issue number6
Early online date28 Apr 2015
DOIs
Publication statusPublished - Jun 2015

Bibliographical note

© 2015 Astro Ltd

Funding: Qualified Personnel Foundation of Taiyuan University of Technology (Grant No. tyutrc201387a), National Natural Science Foundation of China (Grant No. 61227016), the National Science and Technology Infrastructure Program of Science and Technology of Shanxi Province, China (Grant No. 2013091021).

Keywords

  • dual-wavelength
  • fiber grating
  • fiber lasers
  • single-polarization

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