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Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering

Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering
Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering
A Brillouin-based distributed optical fiber dynamic strain sensor is described which converts strain-induced Brillouin frequency shift into optical intensity variations by using an imbalanced Mach-Zhender interferometer. A 3 x 3 coupler is used at the output of this interferometer to permit differentiate and cross multiply demodulation. The demonstrated sensor is capable of probing dynamic strain disturbances over 2 km of sensing length every 0.5 s up to a strain of 10 m.epsilon with an accuracy of ±50 µ.epsilon and spatial resolution of 1.3 m.
0146-9592
3312-3315
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7

Masoudi, Ali, Belal, Mohammad and Newson, Trevor P. (2013) Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering. Optics Letters, 38 (17), 3312-3315. (doi:10.1364/OL.38.003312).

Record type: Article

Abstract

A Brillouin-based distributed optical fiber dynamic strain sensor is described which converts strain-induced Brillouin frequency shift into optical intensity variations by using an imbalanced Mach-Zhender interferometer. A 3 x 3 coupler is used at the output of this interferometer to permit differentiate and cross multiply demodulation. The demonstrated sensor is capable of probing dynamic strain disturbances over 2 km of sensing length every 0.5 s up to a strain of 10 m.epsilon with an accuracy of ±50 µ.epsilon and spatial resolution of 1.3 m.

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More information

Published date: 2013
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 356328
URI: http://eprints.soton.ac.uk/id/eprint/356328
ISSN: 0146-9592
PURE UUID: 4c9440ed-e113-4060-87e5-b7dbd3552c95
ORCID for Ali Masoudi: ORCID iD orcid.org/0000-0003-0001-6080
ORCID for Mohammad Belal: ORCID iD orcid.org/0000-0001-5175-3158

Catalogue record

Date deposited: 13 Sep 2013 10:28
Last modified: 29 Aug 2019 00:40

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