Study of surface plasmon polariton mode in coupled elliptical nanowires

Modal solutions of surface plasmon polariton mode in a coupled structure containing two identical elliptical gold nanowires at close vicinity embedded in ZnO dielectric have been obtained by using full-vectorial finite element method on the basis of E field. The tight confinement found here reveals the characteristics of MIM structure and large propagation length exhibits the property of IMI waveguide. Modal properties like the effective index, polarizabilities, field and power confinement, effective mode area and propagation length of some lower order plasmon modes have been analyzed to find potential applications.