Bi-layer cross chiral structure with strong optical activity and negative refractive index.
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 microm).
Dong
Jianfeng
J
Institute of Optical Fiber Communication and Network Technology, Ningbo University, Ningbo, Zhejiang 315211, China. dongjianfeng@nbu.edu.cn
Zhou
Jiangfeng
J
Koschny
Thomas
T
Soukoulis
Costas
C
D003198:Computer Simulation; D008027:Light; D008422:Materials Testing; D008956:Models, Chemical; D012031:Refractometry; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*
D012834:Silver