Characteristics of surface modes in singly negative metamaterial waveguides

摘要

Metamaterials can be classified into doubly negative materials and singly negative media according to their number of negative constituent parameters. Contrary to the doubly negative media in which light can propagate just like in dielectric layers, incident light to the singly negative materials cannot transmit through them. This opaque property, however, can be overcome by using the interfaces between different kinds of singly negative media, i.e., permittivity-negative and permeability-negative ones. In this paper, we investigate what kinds of surface-guiding modes such interfaces can support and see what their unique features are.