17 June 2013 Low-cost miniature fiber-optic extrinsic Fabry-Perot interferometric pressure sensor for biomedical applications
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Abstract
A fiber-optic pressure sensor based in extrinsic Fabry-Perot interferometer (EFPI) is presented and discussed. The sensing probe is based on an inexpensive all-silica biocompatible design, with 0.2 mm outer diameter, suitable for disposable operation in medical catheters. A white-light interrogation system has been implemented, achieving a target accuracy of 1 mmHg and pressure stability of 1 mmHg/hour for long-term operation. A fiber Bragg grating (FBG) is added in proximity of the sensing tip, compensating temperature variations with 0.5°C accuracy. Design, simulation, and preliminary experimental validation are discussed.
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Sven Poeggel, Sven Poeggel, Daniele Tosi, Daniele Tosi, Gabriel Leen, Gabriel Leen, Elfed Lewis, Elfed Lewis, "Low-cost miniature fiber-optic extrinsic Fabry-Perot interferometric pressure sensor for biomedical applications", Proc. SPIE 8797, Advanced Microscopy Techniques III, 87970B (17 June 2013); doi: 10.1117/12.2031372; https://doi.org/10.1117/12.2031372
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