Optical fiber humidity sensor based on surface plasmon resonance in the infra-red region

M. Hernáez; C. R. Zamarreño; I. R. Matías; F. J. Arregui

doi:10.1117/12.835291

5 October 2009 Optical fiber humidity sensor based on surface plasmon resonance in the infra-red region

M. Hernáez, C. R. Zamarreño, I. R. Matías, F. J. Arregui

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75030L (2009) https://doi.org/10.1117/12.835291
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

Here, the fabrication and characterization of a novel optical fiber humidity sensor based on surface plasmon resonance (SPR) in the infra-red region is presented. Firstly, an indium tin oxide (ITO) coating is deposited onto a 200 μm core diameter optical fiber causing the shift of the SPR wavelength to the infra-red region. Then, the LbL method is used to deposit a polymeric coating onto the ITO layer. The variations in the external humidity originated changes in the thickness and refractive index of the polymeric coating and hence in the resonance.

Citation Download Citation

M. Hernáez, C. R. Zamarreño, I. R. Matías, and F. J. Arregui "Optical fiber humidity sensor based on surface plasmon resonance in the infra-red region", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75030L (5 October 2009); https://doi.org/10.1117/12.835291

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