Design and Simulation of Optical Planar Chiral Metamaterial

摘要

The twisted double-layer metallic wires and twisted conjugated gammadion planar chiral metamaterials working in near-infrared frequency region have been designed and optimized. The simulated results show that the larger circular dichroism, exceptionally strong optical activity and the negative refractive index of the chiral metamaterials can be realized. The negative refractive index is due to a large chiral parameter which does not require simultaneously negative permittivity and negative permeability.