Bi-layer cross chiral structure with strong optical activity and negative refractive index

作者:Dong Jianfeng*; Zhou Jiangfeng; Koschny Thomas; Soukoulis Costas
来源:Optics Express, 2009, 17(16): 14172-14179.
DOI:10.1364/oe.17.014172

摘要

The properties of periodic pairs of mutually twisted metallic (silver) crosses separated by dielectric layer have been investigated by numerical simulation. The results show that the exceptionally strong polarization rotation and circular dichroism, negative permeability and negative refractive index are found at the infrared communication wavelength (1.55 mu m).