LAUSR

Abstract Based on the phase transition of vanadium dioxide, we investigate a switchable metamaterial that can be switched from a cross polarization converter to an analog of electromagnetically induced transparency. When vanadium dioxide is metal, the proposed metamaterial behaves as a cross polarization converter, and it works in a narrow operating band. It is numerically demonstrated that a linearly polarized wave can be transformed to a cross-polarized wave. What's more, the linear-to-cross polarization conversion can work well at the large incident angle even up to 45 ° . This design may have some potential applications in the fields of polarization control and filter. Besides, the designed system behaves as an analog of electromagnetically induced transparency when vanadium dioxide is switched into an insulator. It is composed of a metallic cross and four split ring resonators. The behavior of electromagnetically induced transparency is polarization-insensitive and robust against incident angle. This analog may find potential opportunities for many important applications, such as slow wave and modulator in terahertz frequencies.