Influence of Inhomogeneity in a Dielectric-Loaded Slot in an Infinite Thick Metallic Shield on Higher-Order Mode Resonances

Abstract

Extraordinary transmission through an inhomogeneous dielectric loaded slot in a an infinite metallic shield of finite thickness is demonstrated. We show that the higher order (Fano) transmission resonances' locations and magnitudes can be controlled by introducing a region of different dielectric constant within the slot.