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Distributed-feedback fiber laser sensor for simultaneous strain and temperature measurements operating in the radio-frequency domain

Distributed-feedback fiber laser sensor for simultaneous strain and temperature measurements operating in the radio-frequency domain
Distributed-feedback fiber laser sensor for simultaneous strain and temperature measurements operating in the radio-frequency domain
Radio-frequency (rf) beat frequencies between two longitudinal modes and two polarization modes of a birefringent dual-longitudinal-mode moire distributed-feedback fiber laser are employed to measure strain and temperature simultaneously. Operating entirely in the rf domain, this approach potentially allows one to employ low-cost and precise rf measuring techniques. A strain-temperature cross sensitivity of the strain- and the thermo-optic coefficients, which can be neglected in wavelength-based grating sensors, has been observed. The achieved sensor accuracy was ±15 and ±0.2 C.
0003-6935
3169-3175
Hadeler, O.
421d57e1-e48d-49a4-b3aa-5158e98aade6
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Hadeler, O.
421d57e1-e48d-49a4-b3aa-5158e98aade6
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701

Hadeler, O., Ibsen, M. and Zervas, M.N. (2001) Distributed-feedback fiber laser sensor for simultaneous strain and temperature measurements operating in the radio-frequency domain. Applied Optics, 40 (19), 3169-3175. (doi:10.1364/AO.40.003169).

Record type: Article

Abstract

Radio-frequency (rf) beat frequencies between two longitudinal modes and two polarization modes of a birefringent dual-longitudinal-mode moire distributed-feedback fiber laser are employed to measure strain and temperature simultaneously. Operating entirely in the rf domain, this approach potentially allows one to employ low-cost and precise rf measuring techniques. A strain-temperature cross sensitivity of the strain- and the thermo-optic coefficients, which can be neglected in wavelength-based grating sensors, has been observed. The achieved sensor accuracy was ±15 and ±0.2 C.

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Published date: 2001

Identifiers

Local EPrints ID: 13674
URI: https://eprints.soton.ac.uk/id/eprint/13674
ISSN: 0003-6935
PURE UUID: 84c577dc-c91b-45e1-a428-d3a2d1806ca5
ORCID for M.N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

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Date deposited: 01 Jan 2005
Last modified: 03 Dec 2019 02:04

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