Bends and splitters in graphene nanoribbon waveguides

TL;DR

This paper demonstrates that graphene nanoribbon waveguides can incorporate bends and splitters without additional loss if the nanoribbon width is sub-wavelength, enabling ultra-compact terahertz devices.

Contribution

It reveals that sub-wavelength graphene nanoribbon waveguides can effectively include bends and splitters without extra loss, advancing terahertz device miniaturization.

Findings

Bends and splitters do not add loss in sub-wavelength graphene nanoribbon waveguides.

Transmission line theory explains the observed behavior.

Potential for ultra-compact terahertz devices.

Abstract

We investigate the performance of bends and splitters in graphene nanoribbon waveguides. Although the graphene waveguides are lossy themselves, we show that bends and splitters do not induce any additional loss provided that the nanoribbon width is sub-wavelength. We use transmission line theory to qualitatively interpret the behavior observed in our simulation. Our results pave a promising way to realize ultra-compact devices operating in the terahertz region.