Abstract
AbstractA narrow linewidth fiber laser based on fiber Bragg grating Fabry‐Perot etalon is demonstrated. Spatial hole burning effect is restrained by fiber Faraday rotator. The short fiber Bragg grating Fabry‐Perot etalon as narrow bandwidth filter discriminates and selects laser longitudinal modes efficiently. Stable single frequency 1550 nm laser is acquired. Pumped by 976 nm laser diode, the fiber laser exhibits 11 mW threshold. Output power (50 mW) is obtained upon the 200 mW pump power. Optical‐optical efficiency is 25% and slope efficiency is 27%. The linewidth of laser is less than 10 kHz, measured by the delayed self‐heterodyne method with 10 km single mode fiber. In addition, the lasing linewidth keeps less than 10 kHz over 1 nm tuning range in the temperature tuning experiment. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1453–1456, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI.10.1002/mop.22439
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