Temperature tunable like-electromagnetically induced transparency in metasurface with vanadium dioxide

In this paper, a dual-layer metasurface structure of two horizontal and vertical strips, orthogonal of diagonal cut wires, is investigated by the finite integration time domain. A like-electromagnetically induced transparency (EIT) effect is found with dual-band and large angle. Moreover, the dark mode on low frequencies can be converted to bright mode on high frequency band. To verify the conclusion, the theory of two oscillator model is compared with coupled mode theory method. The results show that the asymmetry of the main structure in the x- and y-axes makes it easier to achieve the polarization insensitive like-EIT effect. In addition, by changing the incident angle, the like-EIT effect always exists until the angle of the incidental electromagnetic wave is 80°. These results have many potential applications for filtering, large-angle switching and sensors.