Multiple-peak surface plasmon resonance optical fiber sensor for high resolution refractive index sensing

David Monzon-Hernandez; Donato Luna-Moreno; Joel Villatoro

doi:10.1117/12.623650

23 May 2005 Multiple-peak surface plasmon resonance optical fiber sensor for high resolution refractive index sensing

David Monzon-Hernandez, Donato Luna-Moreno, Joel Villatoro

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623650
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

Metal-coated singlemode tapered optical fibers are demonstrated for high-resolution refractive index sensing. The fundamental fiber mode can excite the different hybrid surface plasmon modes supported by the semi-cylindrical metallic shell. The transmission spectrum of our devices exhibits multiple resonance peaks with either TE- or TM-polarized light. The number of resonance peaks as well their depth depend on the taper diameter and also on the external refractive index. Experimentally we have found that the first two or three resonance peaks are the most sensitive peaks to refractive index changes. We estimate that a resolution of about 2x10^-7 can be achieved with our sensors. Our devices can be used for high-resolution biosensing.

Citation Download Citation

David Monzon-Hernandez, Donato Luna-Moreno, and Joel Villatoro "Multiple-peak surface plasmon resonance optical fiber sensor for high resolution refractive index sensing", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623650

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