Single polarization, dual wavelength fiber laser based on a 3-stage all fiber lyot filter

Zhijun Yan, Chengbo Mou, Zuxing Zhang, Xiangchuan Wang, Jianfeng Li, Kaiming Zhou, Lin Zhang

Research output: Contribution to journalArticlepeer-review


We have demonstrated a switchable dual wavelength fiber ring laser with a high degree of polarization output by using an intracavity 3-stage all fiber Lyot filter. The filter is formed by concatenating four 45° tilted fiber gratings separated by polarization maintaining fibers with a length ratio of 1:2:4 (20, 40, and 80 cm), giving a compact integrated configuration with reduced bandwidth. Switchable dual wavelength or single wavelength output at 1533.5 and 1563.3 nm has been achieved. The output lasing is considerably stable owing to the in-phase mode-selecting function of the multistage Lyot filter, and has a very high degree of polarization higher than 99.9%.

Original languageEnglish
Article number6782437
Pages (from-to)1085-1088
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number11
Early online date2 Apr 2014
Publication statusPublished - 1 Jun 2014

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  • fiber ring laser
  • Lyot-filter
  • tilted fiber grating


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