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Fabry-Perot cavity for curvature measurement in a medical needle
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Paper Abstract

A reflective fiber optic sensor based on a Fabry-Perot cavity made by splicing two sections of multimode fiber is demonstrated to measure the needle curvature. The sensing structure was incorporated into a medical needle and characterized for curvature and temperature measurements. The maximum sensitivity of -0.152dB/m-1 was obtained to the curvature measurements, with a resolution of 0.089m-1. When subjected to temperature, the sensing head presented a low temperature sensitivity, which resulted in a small cross-sensitivity.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111991B (28 August 2019); doi: 10.1117/12.2540504
Show Author Affiliations
Susana Novais, INESC Porto (Portugal)
Susana O. Silva, INESC Porto (Portugal)
Orlando Frazão, INESC Porto (Portugal)
Univ. do Porto (Portugal)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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