A novel gold-coated multimode fiber sensor

Author

Fontana, Eduardo

Author_Institution

Departamento de Eletronica e Sistemas, CTG/UFPE, Recife, Brazil

Volume

50

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

82

Lastpage

87

Abstract

A novel optical-fiber sensor is proposed for use in chemical analysis. The sensor probe is made of a gold-coated multimode optical fiber, configured to exhibit surface plasmon resonance (SPR) when immersed in a wet environment. The proposed detection strategy comprises measurement of the image pattern irradiated by the fiber under monochromatic illumination. A theoretical model is proposed to determine device performance. From computer simulations, it is shown that the proposed configuration and detection strategy allows reaching a 30-fold enhancement in sensitivity relative to that obtained in previous SPR-based versions of the device

Keywords

chemical sensors; fibre optic sensors; gold; surface plasmon resonance; Au-Cr; chemical analysis; chemical sensor; detection strategy; image pattern; monochromatic illumination; multimode fiber sensor; sensitivity; surface plasmon resonance; wet environment; Chemical analysis; Chemical sensors; Lighting; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical sensors; Plasmons; Probes; Resonance;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.981251

Filename

981251