Refractive index sensor using a Fabry-Perot cavity in polymer fiber

Miguel F. S. Ferreira; Gabriela Statkiewicz-Barabach; Dominik Kowal; Pawel Mergo; Waclaw Urbanczyk; Orlando Frazão

doi:10.1117/12.2264714

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23 April 2017 Refractive index sensor using a Fabry-Perot cavity in polymer fiber

Miguel F. S. Ferreira, Gabriela Statkiewicz-Barabach, Dominik Kowal, Pawel Mergo, Waclaw Urbanczyk, Orlando Frazão

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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032333 (2017) https://doi.org/10.1117/12.2264714
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

The possibility of using polymer fiber as a refractive index sensor is presented. The sensor is based on a Fabry-Perot interferometer formed at the tip of the polymer fiber. The interference is granted due to reflections between a fiber Bragg grating and the fiber end-face. The sensor was characterized to refractive index changes at constant temperature using a fast Fourier transform analysis of the interference signal. A sensitivity of −1.94 RIU^-1 was achieved with a resolution of 1 × 10^-3 RIU and a cross sensitivity to temperature of 1 × 10^-4 RIU/°C.

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Miguel F. S. Ferreira, Gabriela Statkiewicz-Barabach, Dominik Kowal, Pawel Mergo, Waclaw Urbanczyk, and Orlando Frazão "Refractive index sensor using a Fabry-Perot cavity in polymer fiber", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032333 (23 April 2017); https://doi.org/10.1117/12.2264714

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