Abstract: “The single-pole Lorentz model parameters for Silicon-Germanium Alloy (1.5:1) and Cuprous Oxide are presented. An algorithm has been developed to optimize the parameters applicable to a broad frequency range. The obtained parameters have been used to determine the complex relative permittivity for these two materials. To verify the obtained results, they have been compared with experimental values and a very good agreement is achieved. The associated root-mean-square (RMS) deviations are observed to be 0.15 and 0.08 respectively. Finally a plasmonic waveguide based on Metal-Dielectric-Metal (MDM) configuration constructed with silver (metal) and Cuprous Oxide (dielectric) has been analyzed and presented.”

Keywords: Single-pole Lorentz Model, finite-difference timedomain, surface plasmon polariton (SPP), plasmonics, metaldielectric-metal (MDM) waveguide