Aswani Natarajan

Abstract A fully integrated waveguide-based, efficient surface plasmon coupler composed of a realistic non-tapered dielectric waveguide with graphene patches and sheet is designed and optimized for the infrared. The coupling efficiency can reach nearly 80% for a coupler as short as 700 nm for an operating wavelength of 12 $\mathrm{\mu}$m. This work is carried out using rigorous numerical models based on the finite element method taking into account 2D materials as surface conductivities.