Title :
A complete description of the dispersion relation for thin metal film plasmon-polaritons
Author :
Burton, Fraser A. ; Cassidy, Stephen A.
Author_Institution :
British Telecom Res. Lab., Ipswich, UK
fDate :
12/1/1990 12:00:00 AM
Abstract :
A versatile numerical method is used to solve the plasmon-polariton dispersion relation for a planar thin-metal-film geometry. A complete description of the variation of effective-mode index and propagation length with metal thickness and cover index is presented for all four modes. The spatial distribution of these modes is calculated explicitly. The effects of a nonideal metal film and of dielectric loss in the cover material is considered
Keywords :
dispersion relations; electromagnetic wave propagation; metallic thin films; polaritons; surface plasmons; waveguide theory; cover index; dielectric loss; dispersion relation; effective-mode index; metal thickness; nonideal metal film; numerical method; planar thin-metal-film geometry; plasmon-polariton dispersion relation; propagation length; spatial mode distribution; thin metal film plasmon-polaritons; Dielectric constant; Dielectric losses; Dielectric substrates; Dielectric thin films; Dispersion; Geometry; Optical attenuators; Optical films; Optical polarization; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
