Low-cost miniature fiber-optic extrinsic Fabry-Perot interferometric pressure sensor for biomedical applications

Sven Poeggel; Daniele Tosi; Gabriel Leen; Elfed Lewis

doi:10.1117/12.2031372

17 June 2013 Low-cost miniature fiber-optic extrinsic Fabry-Perot interferometric pressure sensor for biomedical applications

Sven Poeggel, Daniele Tosi, Gabriel Leen, Elfed Lewis

Author Affiliations +

Proceedings Volume 8797, Advanced Microscopy Techniques III; 87970B (2013) https://doi.org/10.1117/12.2031372
Event: European Conferences on Biomedical Optics, 2013, Munich, Germany

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.

Citation Download Citation

Sven Poeggel, Daniele Tosi, Gabriel Leen, and 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); https://doi.org/10.1117/12.2031372

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