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.
3312-3315
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
2013
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), .
(doi:10.1364/OL.38.003312).
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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Published date: 2013
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 356328
URI: http://eprints.soton.ac.uk/id/eprint/356328
ISSN: 0146-9592
PURE UUID: 4c9440ed-e113-4060-87e5-b7dbd3552c95
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Date deposited: 13 Sep 2013 10:28
Last modified: 29 Aug 2019 00:40
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