Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique
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Authors
Barrington, James
James, Stephen
Kissinger, Thomas
Staines, Stephen
Prince, Simon
Alcusa Saez, Erica
Lawson, Nicholas J.
Tatam, Ralph P.
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ISSN
0957-0233
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Citation
Barrington JH, James SW, Kissinger T, et al., (2023) Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique, Measurement Science and Technology, Volume 34, July 2023, Article number 075202
Abstract
Range resolved interferometry (RRI) applied to the interrogation of an extrinsic Fabry–Perot based pressure sensor in laboratory and wind tunnel environments is presented. A simple, compact sensor head design was fabricated and subsequently characterised using RRI, which was shown to have a sensitivity of 1.627x10-3 rad Pa−1 with a noise standard deviation of 9 Pa over a data rate of 1.5 kHz. When installed in a high-lift wing for surface pressure evaluation during wind tunnel testing, the approach outlined here was able to perform as well as a conventionally employed commercial device for relative static pressure measurements.
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Github
Keywords
interferometry, wind tunnel, optical fibre sensors, pressure measurements, high-lift wing, RRI, Fabry-Perot
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Attribution 4.0 International