Input polarization control scheme for addressing polarization-induced fading in multiplexed interferometric sensor arrays

Michael J. Marrone; Alan D. Kersey; Anthony D. Dandridge

doi:10.1117/12.56519

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1 January 1992 Input polarization control scheme for addressing polarization-induced fading in multiplexed interferometric sensor arrays

Michael J. Marrone, Alan D. Kersey, Anthony D. Dandridge

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Proceedings Volume 1586, Distributed and Multiplexed Fiber Optic Sensors; (1992) https://doi.org/10.1117/12.56519
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

The results are presented of the first comprehensive experimental investigation of the effects of the state of polarization (SOP) in the common input of the multielement array of sensors on the interferometric signal visibilities of the individual sensors in the array. In one case of a 10-sensor array with randomly set initial visibilities, an empirical determination of the optimum input SOPs is shown to maintain the visibilities of all sensors larger than 0.55, or signal fade less than 6 dB. A theoretical model is developed which predicts the minimum visibility obtained from controlling the input SOP in N-element arrays. The results agree very well with experimental results obtained from a 10-sensor array, including the worst case situation in which all sensors are initially set to the complete polarization-fade condition.

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Michael J. Marrone, Alan D. Kersey, and Anthony D. Dandridge "Input polarization control scheme for addressing polarization-induced fading in multiplexed interferometric sensor arrays", Proc. SPIE 1586, Distributed and Multiplexed Fiber Optic Sensors, (1 January 1992); https://doi.org/10.1117/12.56519

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