Research of an Optical Device Based on a Anisotropic Epsilon-Near-Zero Metamaterial

Abstract

\n In this work, a novel design of an electro-tunable narrow channel based on an anisotropic epsilon-near-zero (AENZ) metamaterial is presented. The ENZ condition can be flexibly tuned by an applied gate voltage. This permittivity-tunable channel is composed of alternating layers of graphene and nanoglass with a thickness of 3nm. Additionally, this channel is utilized in a dual output light modulator to expand its application. Numerical analysis results show that the maximum transmittance of incident light can reach 96.7%, and the extinction ratio (ER) of the device is 14.8dB when the gate voltage is added to 4.96V at the near-infrared wavelength based on the finite element method (FEM). This ultracompact optical device may open a new realm in highly integrated photonic circuits, especially on the nano-chips.