During the wavelength demodulation of fiber laser sensors,random fluctuations in states of polarization of the interferometer beams induce fading of the interferometric fringe visibility,that effects the reliability of the system.To improve the fringe visibility of output signal,a simple and useful way is proposed which called the Faraday rotator mirror method.In theory domain,take the Jones matrix into calculated,seemed that when the degrees of Faraday rotator mirrors around 45°,the results would suit the system,and this had been finely testified by experiments.
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齐龙舟,肖浩,李芳,刘育梁.波长解调用偏振无关光纤干涉仪的研究[J].激光与红外,2008,38(3):259~262 QI Long-zhou, XIAO Hao, LI Fang, LIU Yu-liang. Study of Polarization-insensitive Fiber Optic Interferometers for Wavelength Demodulation[J]. LASER & INFRARED,2008,38(3):259~262