13 August 1998 Eliminating polarization-induced fading in interferometric fiber optic arrays by modulation
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Abstract
This paper puts forward a new method to overcome the polarization-induced fading (PIF) in conventional low- birefringence optical fiber constructed interferometric sensors arrays. By inducing high frequency modulation to the state of polarization at the output end of the array, the maximum PIF variation of each sensor's signal is 4.7dB or 6.3dB according to the selection of modulation signal. Combined with an electronic automatic gain control circuit or dividing each sensor's signal by its visibility, each sensor's signal fading is recovered at the expense of a relevant signal/noise degradation of 4.7dB or 6.3dB.
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Xiaodong Zhou, Xiaodong Zhou, Wen Zhou, Wen Zhou, Weizhong Tang, Weizhong Tang, Xianfeng Ye, Xianfeng Ye, } "Eliminating polarization-induced fading in interferometric fiber optic arrays by modulation", Proc. SPIE 3555, Optical and Fiber Optic Sensor Systems, (13 August 1998); doi: 10.1117/12.318155; https://doi.org/10.1117/12.318155
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