Distributed acoustic sensor based on a two-mode fiber
Distributed acoustic sensor based on a two-mode fiber
A distributed optical fiber dynamic strain sensor also known as a distributed acoustic sensor (DAS) based on two-mode fiber is demonstrated. By using φ-OTDR interrogation technique, the backscattered light from higher order modes can be used to fully quantify vibrations along the sensing fiber. In addition, by combining the results obtained from different modes, 2.52dB improvement in noise floor is achieved. These results confirm that few-mode fibers can be used for DAS applications.
25399-25407
Chen, Mengmeng
7123c670-4529-48c4-a9e9-f1b14d9f28c7
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
17 September 2018
Chen, Mengmeng
7123c670-4529-48c4-a9e9-f1b14d9f28c7
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Chen, Mengmeng, Masoudi, Ali, Parmigiani, Francesca and Brambilla, Gilberto
(2018)
Distributed acoustic sensor based on a two-mode fiber.
Optics Express, 26 (19), .
(doi:10.1364/OE.26.025399).
Abstract
A distributed optical fiber dynamic strain sensor also known as a distributed acoustic sensor (DAS) based on two-mode fiber is demonstrated. By using φ-OTDR interrogation technique, the backscattered light from higher order modes can be used to fully quantify vibrations along the sensing fiber. In addition, by combining the results obtained from different modes, 2.52dB improvement in noise floor is achieved. These results confirm that few-mode fibers can be used for DAS applications.
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oe-26-19-25399
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Accepted/In Press date: 2 September 2018
e-pub ahead of print date: 14 September 2018
Published date: 17 September 2018
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Local EPrints ID: 423859
URI: http://eprints.soton.ac.uk/id/eprint/423859
ISSN: 1094-4087
PURE UUID: 6ef6eaa9-e6e3-4f75-82ba-506ce00e08c0
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Date deposited: 03 Oct 2018 16:30
Last modified: 16 Mar 2024 04:07
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