Electromagnetically induced transparency-like effect with circular polarization selectivity in bilayered metamaterial

We propose a metamaterial of triple-arc resonator (TAR) to realize electromagnetically induced transparency-like (EIT-like) effect with circular polarization selectivity. The metamaterial is composed of single-arc resonator (SAR) and a double-arc resonator (DAR) as two bright modes. EIT-like transmission with circular polarization selectivity is observed in the spectra, which is generated from the frequency detuning of the two bright modes. Further investigations prove the bright-bright mode coupling is greatly influenced by the phase matching between DAR and SAR, which could be adjusted and manipulated by the SAR angle of rotation. The bilayered metamaterial with chiral-selective EIT-like effect is a progress to their 3D counterparts, which paves the way for their applications in microwave photonics regions.