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Proceedings Paper

Multiple-peak surface plasmon resonance optical fiber sensor for high resolution refractive index sensing
Author(s): David Monzon-Hernandez; Donato Luna-Moreno; Joel Villatoro
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Paper 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.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623650
Show Author Affiliations
David Monzon-Hernandez, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Donato Luna-Moreno, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Joel Villatoro, Ctr. de Investigaciones en Optica, A.C. (Mexico)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors

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