Plasmonic Properties of Graphene Loaded Waveguide Bounded by Chiroferrite Medium

Herein, plasmonic characteristics of graphene filled waveguide surrounded by chiroferrite medium are analyzed in the THz frequency spectrum. Graphene conductivity is modelled using the Kobo formula, and impedance boundary conditions are employed to compute dispersion relation. The influence of constitutive variables of chiroferrite medium on the propagation behavior of SPP mode is examined. The propagation behavior of SPPs mode is studied by changing the constitutive parameters of chiroferrite medium and graphene features. From numerical results, it is revealed that effective mode index (EMI, phase velocity, graphene conductivity, and EM wave frequency) can be tailored by adjusting chirality, gyrotropy, and graphene features (chemical potential, number of graphene layers) in the THz frequency range. This work may have potential applications in plasmonic community to design the innovative optical sensors, plasmonic platforms, detectors, and surface waveguides in the THz frequency region and provide active control due to additional degree of freedom in graphene and anisotropy of chiral medium.