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Research on tunable erbium-doped ring fiber laser based on a high-birefringence Sagnac loop: theory and experiment

Wang Jing Zheng Kai Li Jian Liu Li-Song Chen Gen-Xiang Jian Shui-Sheng

Research on tunable erbium-doped ring fiber laser based on a high-birefringence Sagnac loop: theory and experiment

Wang Jing, Zheng Kai, Li Jian, Liu Li-Song, Chen Gen-Xiang, Jian Shui-Sheng
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Publishing process
  • Received Date:  02 January 2009
  • Accepted Date:  11 February 2009
  • Published Online:  20 November 2009

Research on tunable erbium-doped ring fiber laser based on a high-birefringence Sagnac loop: theory and experiment

  • 1. 北京交通大学光波技术研究所,北京 100044

Abstract: A simple erbium-doped ring fiber laser based on a high-birefringence Sagnac loop filter is proposed. The Sagnac is composed of a polarization controller (PC) and a polarization-maintaining fiber (PMF). The effect of PC and PMF on tunable laser is analyzed in theory. In experiment, the single, double and multiple wavelength lasers are obtained by adjusting the PC. The interval of wavelength varies with the length of PMF. The experimental results are in good agreement with the theorefical analysis. In experiment the stable laser output with 20% slope efficiency, 0.016 nm 3 dB line-width, 0.097 nm 30 dB line-width and 40 dB SMSR was obtained.

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