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Dynamic Measurement of Fiber-Birefringence Spatial Distribution by Coherent Heterodyne Detection of Rayleigh Backscattered Light

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Abstract

Dynamic measurement of fiber-birefringence spatial distribution along the fibers is performed by coherent heterodyne detection of Rayleigh backscattered light. Local fiber vibration at 250 Hz over the 80-km-long fibers was successfully measured by the technique.

© 2021 The Author(s)

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