Fabry-Perot cavity for curvature measurement in a medical needle

Susana Novais; Susana O. Silva; Orlando Frazão

doi:10.1117/12.2540504

28 August 2019 Fabry-Perot cavity for curvature measurement in a medical needle

Susana Novais, Susana O. Silva, Orlando Frazão

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111991B (2019) https://doi.org/10.1117/12.2540504
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

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.

Citation Download Citation

Susana Novais, Susana O. Silva, and Orlando Frazão "Fabry-Perot cavity for curvature measurement in a medical needle", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111991B (28 August 2019); https://doi.org/10.1117/12.2540504

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