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Proceedings Paper

Gold island fiber optic sensor
Author(s): Fabrice Meriaudeau; A. G. Wig; A. Passian; Todd R. Downey; Milan Buncick; Trinidad L. Ferrell
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Paper Abstract

A fiber optic chemical sensor based on gold-island surface plasmon excitation is presented. The sensing part of the fiber is the end of the fiber onto which a thin layer of gold has been deposited to form a particulate surface. Annealing the gold reshapes the particles and produces an optical absorbance near 535 nm with the fiber in air. The optical absorption resonance of the gold particles is shifted if the fiber is immersed in a medium other than air. These resonance shifts are examined by transmission spectroscopy through the fiber. Experimental results for the sensitivity and dynamic range in the measurement of liquid solutions are in agreement with a basic theoretical model which characterizes the surface plasmon using nonretarded electrodynamics.

Paper Details

Date Published: 9 December 1999
PDF: 10 pages
Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999); doi: 10.1117/12.372960
Show Author Affiliations
Fabrice Meriaudeau, Univ. de Bourgogne (France) and Oak Ridge National Lab. (France)
A. G. Wig, Univ. of Tennessee/Knoxville (United States)
A. Passian, Univ. of Tennessee/Knoxville (United States)
Todd R. Downey, Univ. of Tennessee/Knoxville (United States)
Milan Buncick, Univ. of Memphis (United States)
Trinidad L. Ferrell, Oak Ridge National Lab. and Univ. of Tennessee/Knoxville (United States)

Published in SPIE Proceedings Vol. 3860:
Fiber Optic Sensor Technology and Applications
Michael A. Marcus; Brian Culshaw, Editor(s)

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