Reflectionless Plasmonic Right-Angled Waveguide Bend and Divider Using Graphene and Transformation Optics

TL;DR

This paper proposes a reflectionless plasmonic waveguide bend and divider using graphene and transformation optics, enabling efficient surface plasmon polariton guidance at terahertz frequencies for advanced THz devices.

Contribution

It introduces a novel design of a reflectionless waveguide bend and divider using graphene and transformation optics, with continuous refractive index profiles for improved SPP guidance.

Findings

Achieved reflectionless 90-degree waveguide bend

Designed a T-shaped divider with efficient SPP guidance

Demonstrated potential for THz device applications

Abstract

In this work, a plasmonic right-angled waveguide bend and divider are proposed. Using the Transformation Optics (TO) approach the transformation media of a bend and a T-shaped divider are obtained. Such media with continuous refractive index are realized with the help of graphene in the terahertz frequency range, key to effectively guiding the surface plasmon polariton (SPP) propagation on the 90 degree curves. Components with such capability are promising for THz device applications.