Electronic controllable broadband and robust terahertz surface plasmon-polaritons switch based on hybrid ITO waveguide coupler

TL;DR

This paper introduces a robust, voltage-controlled terahertz surface plasmon-polaritons switch based on quantum engineering, offering broadband operation from 0.5 to 0.7 THz for integrated optical and THz communication systems.

Contribution

It presents a novel quantum-engineered design for a broadband, controllable SPPs switch that is robust against geometric perturbations.

Findings

Operates effectively from 0.5 to 0.7 THz.

Controlled by external voltage.

Robust against geometrical perturbations.

Abstract

The surface plasmon-polaritons (SPPs) switch is the key element of the integrated devices in optical computation and terahertz (THz) communications. In this paper, we propose a novel design of THz SPPs switch based on quantum engineering. Due to the robustness of coherent quantum control technique, our switch is very robust against with perturbations of geometrical parameters and presents a good performance at on-state (and off-state) from 0.5 THz to 0.7 THz. The on-state and off-state of our device can be controlled by the external voltage. We believe this finding will be the great improvement for the integrated optical computing and THz communications.