Wavelength stabilization of a 980-nm semiconductor laser module stabilized with high-power uncooled dual FBG |
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Authors: | Yize Huang Yi Li Haifang Wang Xiaojing Yu Hu Zhang Wei Zhang Huiqun Zhu Sheng Zhou Ruoxi Sun and Yuming Zhang |
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Institution: | 1 School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China 2 Shanghai Key Laboratory of Modern Optical Systems,Shanghai 200093,China 3 Institute of Thin Films and Nanomaterials,Wuyi University,Jiangmen 529020,China |
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Abstract: | An optimized dual fiber Bragg grating (FBG) is proposed for 980-nm semiconductor lasers without thermoelectric coolers to restrict temperature-induced wavelength shift.The mathematical model of the temperature-induced wavelength shift of the laser with the dual FBG is built using the external cavity feedback rate equations.The external cavity parameters are optimized for achieving the stability mode-locking laser output.The spectral characteristics of the dual FBG stabilized laser are measured to range from 0 to 70 °C.The side mode suppression ratio (SMSR) is more than 45 dB,while the full-width at half-maximum (FWHM) is less than 1 nm.The peak wavelength shift is less than 0.1 nm.The dual FBG wavelength shift proportional coefficient is between 0.1086 and 0.4342. |
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