Dynamic Modulation of Multilayer Structured Metamaterials Based on Vanadium Dioxide

Abstract

Abstract In order to achieve a better characterized electromagnetic induction transparency (EIT) effect, a temperature-controlled modulated three-layer terahertz (THz) metamaterial structure based on the phase transition properties of vanadium dioxide (VO2) is designed, which is capable of demonstrating independently tunable multi-band broadband EIT effect. Simulations are applied to optimize the structure parametrically by varying the C-type resonator’s the length of the two arms and the interlayer spacing of each dielectric layer. The overall structure coupling is changed by varying the conductivity of the temperature-regulated VO2 to achieve independent dynamic modulation. Finally, the EIT effect is achieved at more than 85% of the frequencies in the 0.8 THz to 2.2 THz region, and the transparency exceeds 0.8. This independently tunable and broadband characteristic is of great interest for the application of the EIT effect.