Humidity sensor fabricated by deposition of SnO2 layers onto optical fibers

P. Sanchez; C. R. Zamarreño; M. Hernaez; I. del Villar; I. R. Matias; F. J. Arregui

doi:10.1117/12.2026091

20 May 2013 Humidity sensor fabricated by deposition of SnO₂ layers onto optical fibers

P. Sanchez, C. R. Zamarreño, M. Hernaez, I. del Villar, I. R. Matias, F. J. Arregui

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87940C (2013) https://doi.org/10.1117/12.2026091
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

In this work, the fabrication and characterization of novel humidity sensors based on Lossy Mode Resonances (LMR) is presented. Tin oxide (SnO₂) coatings fabricated onto optical fibers are used as LMR supporting coatings. The SnO₂ based refractometers showed an average sensitivity of 6715 nm/refractive index unit (RIU) in the range 1.333–1.420 RIU. The behavior of this optical fiber device as relative humidity (RH) sensor was also tested, monitoring its response to different surrounding humidity levels. The results show a sensitivity of 0.1 nm/RH% in the range from 20% to 80% RH.

Citation Download Citation

P. Sanchez, C. R. Zamarreño, M. Hernaez, I. del Villar, I. R. Matias, and F. J. Arregui "Humidity sensor fabricated by deposition of SnO₂ layers onto optical fibers", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87940C (20 May 2013); https://doi.org/10.1117/12.2026091

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