Investigation on strong optical activity and negative refractive index in double-layer metallic wires planar chiral structure
双层金属线平面手征结构的强旋光性和负折射率研究

A planar chiral structure composed of double-layer metallic wires with fourfold symmetry is proposed. The rotation angle and the dielectric layer thickness between double-layer metallic wires is optimized. The numerical simulation results show that the exceptionally strong polarization rotation and the large chiral parameter are found at the infrared wavelength, and show a negative refraction index in a certain band.