Abstract
A stable and tunable linear polarization single longitudinal mode fiber ring laser is proposed and demonstrated. A high extinction ratio spatial mode interference filter utilizing two-mode graded-index fiber supresses irregular side modes effectively, the combination of fiber polarizer and polarization maintaining fiber act as a polarization dependent comb filter, and tunable bandpass filter is adopted to select proper lasing wavelength. The power fluctuation and wavelength fluctuation at 1549.88 nm are less than 0.05 dB and 0.02 nm in 1 h, respectively. Only one longitudinal mode appears within a free spectral range of 7.5 GHz, and the degree of polarization in percentage is approximately as high as 99.07%.
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This work was supported by the Natural Science Foundation of Jilin Province under Grant No. 20160101245JC. The authors thank FiberHome for providing TMGIF with high quality.
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Sun, T., Guo, Y., Wang, T. et al. A stable and tunable linear polarization single longitudinal mode fiber ring laser. Opt Quant Electron 50, 148 (2018). https://doi.org/10.1007/s11082-018-1404-5
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DOI: https://doi.org/10.1007/s11082-018-1404-5