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Proceedings Paper

SPR based three channels fiber optic sensor for aqueous environment
Author(s): Roli Verma; Banshi D. Gupta
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Paper Abstract

Fabrication and characterization of the surface plasmon resonance (SPR) based three channel fiber optic sensor for multiple parameter sensing have been carried out. Three probes have been prepared on a single fiber by coating silver, gold and copper along with one high index titanium oxide on three unclad well separated portions of the fiber respectively. SPR spectra have been recorded for aqueous sucrose solutions of varying refractive indices. The sensor relies on wavelength interrogation technique. To verify the results, simulations have been carried out using a multilayer model and geometrical optics. The experimental and simulated results have been found to match qualitatively. The present sensor can simultaneously sense multiple parameters/analytes at a single platform.

Paper Details

Date Published: 8 March 2014
PDF: 8 pages
Proc. SPIE 8992, Photonic Instrumentation Engineering, 899209 (8 March 2014); doi: 10.1117/12.2038389
Show Author Affiliations
Roli Verma, Indian Institute of Technology Delhi (India)
Banshi D. Gupta, Indian Institute of Technology Delhi (India)

Published in SPIE Proceedings Vol. 8992:
Photonic Instrumentation Engineering
Yakov G. Soskind; Craig Olson, Editor(s)

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