title: Channeling light along a chain of near-field coupled gold nanoparticles near a metallic film.
abstract: We study the propagation of light along a chain of 20-nm-spaced gold particles lying onto a silica substrate in which a metallic film can be incorporated. We first discuss, for a pure dielectric substrate, the specificities of the chain modes as compared to larger separation distances where far-field coupling dominates. We then show how the introduction of a buried metallic film allows a substantial increase in the propagation lengths. Finally, we discuss the crosstalk between two adjacent chains, with and without the buried metallic layer, for applications to ultra-compact interconnects.
authors.affiliation: Tyndall National Institute, Lee Maltings, Prospect Row, Cork, Ireland. gaetan.leveque@tyndall.ie
authors.forename: Gaëtan
authors.initials: G
authors.lastname: Lévêque
authors.forename: Romain
authors.initials: R
authors.lastname: Quidant