Polarization fading mitigation in distributed acoustic sensors based on a high-speed polarization rotator

Bakhtiari Gorajoobi, Shahab, Masoudi, Ali and Brambilla, Gilberto (2022) Polarization fading mitigation in distributed acoustic sensors based on a high-speed polarization rotator. Optics Letters, 47 (5), 1283-1286. (doi:10.1364/OL.450388).

Record type: Article

Abstract

A distributed optical fiber acoustic sensor based on interferometric demodulation technique with no polarization fading is demonstrated. A polarization diversity scheme based on a high-speed polarization rotator is used to eliminate signal fading due to polarization mismatch in the Rayleigh backscattered signal between adjacent points on the sensing fiber. This technique yields a spatially uniform response to the applied strain. The sensor exhibited spatial and strain resolutions of <4 m and <7 nϵ, respectively.

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More information

Accepted/In Press date: 11 January 2022

e-pub ahead of print date: 12 January 2022

Published date: 28 February 2022

Additional Information: Funding Information: Natural Environment Research Council (NE/S012877/1, NE/T005890/1); Royal Society (CHL/R1/180350). Publisher Copyright: © 2022 Optica Publishing Group. Copyright: Copyright 2022 Elsevier B.V., All rights reserved.

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