Frontiers of Optoelectronics, Volume. 1, Issue 3, 215(2008)
High efficient and narrow linewidth fiber laser based on fiber grating Fabry-Perot cavity
A high Er3+-doped narrow linewidth fiber laser based on fiber Bragg grating Fabry-Perot cavity was demonstrated. The spatial hole burning effect was restrained by a fiber Faraday rotator. Two short fiber Bragg grating Fabry-Perot cavities as narrow bandwidth filters discriminated and selected laser longitudinal modes efficiently. A stable single-frequency 1534.83 nm laser was acquired. Pumped by two 976 nm laser diodes and twoended output, the fiber laser exhibited a 12 mW threshold. Total 39.5 mW output power and one end 22 mW output power were obtained at the maximum 145 mW pump power. Optical-optical efficiency was 27% and slope efficiency was 29.7%. The output power seemed to be saturated when pump power increased. The 3 dB linewidth of the laser was less than 7.5 kHz, measured by the delayed self-heterodyne method with 15 km monomode fiber. The high power narrow linewidth fiber laser can be used in high resolution fiber sensor systems.
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Bo WU, Yongzhi LIU, Qianshu ZHANG, Huimin YUE, Zhiyong DAI. High efficient and narrow linewidth fiber laser based on fiber grating Fabry-Perot cavity[J]. Frontiers of Optoelectronics, 2008, 1(3): 215
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Published Online: Nov. 6, 2012
The Author Email: WU Bo (w_bo@sohu.com)