DefinePK

Abstract

 
A theoretical formulation is developed for the graphene coated metallic cylindrical waveguide embedded in dielectric environment. The graphene coating is considered to be infinitesimally thin and its conductivity is modeled in the framework of Kubo's formulism. The dispersion relation for the fundamental transverse magnetic plasmon modes propagating at the metal-graphene dielectric interface is derived using Maxwell's equations and impedance matching boundary conditions. It is demonstrated that propagation characteristics of surface waves are sensitive to various parameters and can be modulated by altering chemical potential of graphene and refractive index of the surrounding environment. The reduction of normalized propagation constant by increasing the diameter of the metallic cylinder revealed the potential applications of proposed structure for the designing of miniaturized inter connect for optical circuit. This work may enrich the electro-magnetic theory which is of great importance for various optoelectronic applications.