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Proceedings Paper

Simultaneous and quasi-independent strain and temperature sensor based on microstructured optical fiber
Author(s): A. Lopez-Aldaba; J.-L. Auguste; R. Jamier; P. Roy; M. Lopez-Amo
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Paper Abstract

In this paper, a new sensor system for simultaneous and quasi-independent strain and temperature measurements is presented. The interrogation of the sensing head has been carried out by monitoring the FFT phase variations of two of the microstructured optical fiber (MOF) cavity interference frequencies. This method is independent of the signal amplitude and also avoids the need to track the wavelength evolution in the spectrum, which can be a handicap when there are multiple interference frequency components with different sensitivities. The sensor is operated within a range of temperature of 30°C-75°C, and 380με of maximum strain were applied; being the sensitivities achieved of 127.5pm/°C and -19.1pm/με respectively. Because the system uses an optical interrogator as unique active element, the system presents a cost-effective feature.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233I (23 April 2017); doi: 10.1117/12.2265052
Show Author Affiliations
A. Lopez-Aldaba, Univ. Pública de Navarra (Spain)
J.-L. Auguste, Xlim, CNRS, Univ. of Limoges (France)
R. Jamier, Xlim, CNRS, Univ. of Limoges (France)
P. Roy, Xlim, CNRS, Univ. of Limoges (France)
M. Lopez-Amo, Univ. Pública de Navarra (Spain)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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