DocumentCode :
44562
Title :
Analysis of Phase Interrogated SPR Fiber Optic Sensors With Bimetallic Layers
Author :
Moayyed, Hamed ; Teixeira Leite, Ivo ; Coelho, Luis ; Santos, Jose Luis ; Viegas, Diana
Author_Institution :
Inst. de Eng. de Sist. e Comput.-Tecnol. e Cienc., Porto, Portugal
Volume :
14
Issue :
10
fYear :
2014
fDate :
Oct. 2014
Firstpage :
3662
Lastpage :
3668
Abstract :
An effective analytical model combining geometrical optics with the transfer-matrix theory for stratified optical media is applied to investigate the sensing properties of tapered optical fiber surface plasmon resonance (SPR) sensors incorporating Ag-Au bimetallic layers, particularly in the context of phase interrogation. The performance of the sensing structures is studied as a function of the tapering parameters and thickness of the metallic layers. It is shown that the Ag-Au bimetallic combination is capable of improving the resolution and tuning working region of SPR fiber-optic sensors and that by tapering the sensing structures enhanced sensitivity can be achieved when phase interrogation is considered.
Keywords :
bimetals; fibre optic sensors; geometrical optics; gold; inhomogeneous media; optical tuning; silver; surface plasmon resonance; Ag-Au; bimetallic layer; geometrical optics; phase interrogated SPR fiber optic sensor analysis; stratified optical media; tapered optical fiber surface plasmon resonance sensor; transfer-matrix theory; Optical fiber sensors; Optical fibers; Plasmons; Refractive index; Sensitivity; Surface plasmon resonance; bimetallic combination; fiber-optic sensors; phase interrogation; tapered optical fibers;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2014.2329918
Filename :
6828715
Link To Document :
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