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Authors

Poeggel, S,Tosi, D,Leen, G,Lewis, E,Beaurepaire, E,So, PTC

Conference Title

ADVANCED MICROSCOPY TECHNIQUES III

Title of Paper

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

Year

2013

Month

January

Status

Published

Peer Reviewed

Times Cited

()

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Fiber optic pressure sensor Fiber optic sensor (FOS) Fabry-Perot interferometry (FPI) Extrinsic Fabry-Perot Interferometer (EFPI) Pressure transducer Medical pressure sensor

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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 degrees C accuracy. Design, simulation, and preliminary experimental validation are discussed.

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DOI Link

10.1117/12.2031372

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