Barrington, JamesJames, StephenKissinger, ThomasStaines, StephenPrince, SimonAlcusa Saez, EricaLawson, Nicholas J.Tatam, Ralph P.2023-05-152023-05-152023-04-21Barrington 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 0752020957-0233https://doi.org/10.1088/1361-6501/accaffhttps://dspace.lib.cranfield.ac.uk/handle/1826/19648Range 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.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/interferometrywind tunneloptical fibre sensorspressure measurementshigh-lift wingRRIFabry-PerotArticle