Analysis of modes in pairing of single-negative material
负介电常数材料和负磁导率材料的双层结构中电磁波模式分析

The modes in a double-layer of single-negative material have been investigated. The conditions for the existence of different modes have been analyzed. The relations between different modes and material parameters are considered. Tunneling mode appears when the general zero average permittivity and permeability conditions are satisfied. When the wave guide condition is satisfied, electromagnetic wave is evanescent outside the material, and the field is mainly localized at the interface of the two single-negative layers.