Title :
Surface plasmon excitation in fiber-optics sensors: a novel theoretical approach
Author :
Esteban, Ó ; Alonso, R. ; Navarrete, M.C. ; Gonzàlez-Cano, A.
Author_Institution :
Departamento de Electronica, Univ. de Alcala, Madrid, Spain
fDate :
3/1/2002 12:00:00 AM
Abstract :
A theoretical method for the study of surface plasmon excitation in metallic layers, as used in fiber-optics sensors, is presented. It is based in the calculation of the propagated fields in the waveguide structure and allows us to compute the loss of optical power in the fiber (which is the measured parameter) from energy conservation considerations. The agreement with experimental data obtained with real sensors is good. The method is conceptually simple and can be adapted to different configurations of the sensors
Keywords :
fibre optic sensors; optical fibre losses; refractive index; surface plasmon resonance; energy conservation considerations; evanescent wave; fiber-optics sensors; fundamental mode; intensity distribution; metallic layers; monomode fiber; optical power loss; polished cladding; propagated fields; surface plasmon excitation; waveguide structure; Optical computing; Optical fiber losses; Optical fiber sensors; Optical propagation; Optical sensors; Optical surface waves; Optical waveguide theory; Optical waveguides; Plasmons; Propagation losses;
Journal_Title :
Lightwave Technology, Journal of
