title: Characterization of surface-plasmon modes in metal-clad optical waveguides.
abstract: Finite-element analysis, based on the vector H-field formulation and incorporating the perturbation technique, is used to calculate the complex propagation characteristics of metal-coated dielectric waveguides. The propagation and attenuation characteristics of the surface-plasmon modes at the metal/dielectric interfaces are presented. The effects on the optical properties of metal-clad optical fibers with infinite and finite cladding thickness and the formation of the supermodes due to the coupling between the surface-plasmon modes in the presence of different surrounding materials are also investigated.
authors.affiliation: Photonics Research Group, School of Engineering and Mathematical Sciences, City University, Northampton Square, London, UK.
authors.forename: C
authors.initials: C
authors.lastname: Themistos
authors.forename: B M A
authors.initials: BM
authors.lastname: Rahman
authors.forename: M
authors.initials: M
authors.lastname: Rajarajan
authors.forename: K
authors.initials: K
authors.lastname: Kalli
authors.forename: K T V
authors.initials: KT
authors.lastname: Grattan