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

Polarization fading mitigation in distributed acoustic sensors based on a high-speed polarization rotator
Polarization fading mitigation in distributed acoustic sensors based on a high-speed polarization rotator
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.
0146-9592
1283-1286
Bakhtiari Gorajoobi, Shahab
ba37e5f9-6a5e-4beb-82eb-b932613fba55
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Bakhtiari Gorajoobi, Shahab
ba37e5f9-6a5e-4beb-82eb-b932613fba55
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

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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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.

Identifiers

Local EPrints ID: 454578
URI: http://eprints.soton.ac.uk/id/eprint/454578
ISSN: 0146-9592
PURE UUID: 8b5a06e8-9e35-421f-8286-92858bc46c80
ORCID for Ali Masoudi: ORCID iD orcid.org/0000-0003-0001-6080
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

Catalogue record

Date deposited: 16 Feb 2022 17:43
Last modified: 28 Oct 2022 01:52

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Contributors

Author: Shahab Bakhtiari Gorajoobi
Author: Ali Masoudi ORCID iD

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