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A distributed optical fibre dynamic strain sensor based on phase-OTDR

A distributed optical fibre dynamic strain sensor based on phase-OTDR
A distributed optical fibre dynamic strain sensor based on phase-OTDR
A distributed optical fibre sensor is introduced which is capable of quantifying multiple dynamic strain perturbations along 1 km of a sensing fibre simultaneously using a standard telecommunication single-mode optical fibre. The technique is based on measuring the phase between the Rayleigh scattered light from two sections of the fibre which define the gauge length. The phase is spatially determined along the entire length of the fibre with a single pulse. This allows multiple moving strain perturbation to be tracked and quantified along the entire length of the fibre. The demonstrated setup has a spatial resolution of 2 m with a frequency range of 500-5000 Hz. The minimum detectable strain perturbation of the sensor was measured to be 80 nε.
0957-0233
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7

Masoudi, Ali, Belal, Mohammad and Newson, T.P. (2013) A distributed optical fibre dynamic strain sensor based on phase-OTDR. Measurement Science and Technology, 24 (8), [85204]. (doi:10.1088/0957-0233/24/8/085204).

Record type: Article

Abstract

A distributed optical fibre sensor is introduced which is capable of quantifying multiple dynamic strain perturbations along 1 km of a sensing fibre simultaneously using a standard telecommunication single-mode optical fibre. The technique is based on measuring the phase between the Rayleigh scattered light from two sections of the fibre which define the gauge length. The phase is spatially determined along the entire length of the fibre with a single pulse. This allows multiple moving strain perturbation to be tracked and quantified along the entire length of the fibre. The demonstrated setup has a spatial resolution of 2 m with a frequency range of 500-5000 Hz. The minimum detectable strain perturbation of the sensor was measured to be 80 nε.

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More information

Published date: 2013
Organisations: Optoelectronics Research Centre, Electronics & Computer Science

Identifiers

Local EPrints ID: 356341
URI: http://eprints.soton.ac.uk/id/eprint/356341
ISSN: 0957-0233
PURE UUID: 8fc4fb00-7ed6-41e5-95db-fd544ee0f1e5
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 10:21
Last modified: 26 Nov 2021 02:57

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