Title :
Chemical sensing with gold coated optical fibers
Author :
Fontana, Eduardo
Author_Institution :
Univ. Fed. de Pernambuco, Recife, Brazil
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 on 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 attaining 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; sensitivity analysis; surface plasmon resonance; Au; Au coated optical fibers; chemical analysis; chemical sensing; computer simulations; detection strategy; device performance; fibre irradiated image pattern; monochromatic illumination; multimode optical fiber; optical fiber sensor; sensitivity enhancement; sensor probe; surface plasmon resonance; theoretical model; wet environment; Chemical analysis; Chemical sensors; Gold; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical sensors; Plasmons; Probes; Resonance;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.866147
