23 February 2009 Wavelength stabilizer based on dual fiber Bragg gratings for 980nm Mini-uncooled pump laser
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High power 980nm pump lasers are the key components in optical fiber amplifier. Wavelength stability for 980nm Miniuncooled pump laser is required to maintain the amplifier's efficiency throughout its lifetime. In this paper, a new type of wavelength stabilizer for uncooled pump laser which utilizes two fiber Bragg gratings (FBGs) matched in wavelength, bandwidth, and reflectivity is presented. The characteristics of transmissivity and reflectivity for the dual FBGs stabilized 980nm pump laser are theoretically modeled and experimentally studied. The results show that the output spectral characteristics of the uncooled pump laser with the dual FBGs have been greatly improved. The laser module can work steadily over a wide temperature range from 0°C to 70°C, with 0.2nm wavelength shift, along with more than 45dB side mode suppression ratio, and less than 1.57nm spectral bandwidth.
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Shuangshuang Hu, Shuangshuang Hu, Yi Li, Yi Li, Qunjie Jiang, Qunjie Jiang, Bin Wu, Bin Wu, Xiaojing Yu, Xiaojing Yu, Haifang Wang, Haifang Wang, } "Wavelength stabilizer based on dual fiber Bragg gratings for 980nm Mini-uncooled pump laser", Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 72781L (23 February 2009); doi: 10.1117/12.820647; https://doi.org/10.1117/12.820647

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