Metamaterial is one of the great discoveries on physics and electromagnetics in this century. The permittivity and permeability of metamaterials can be artificially tuned at will. Thus, metamaterials have many extensive applications in optoelectronics and communications. Based on theoretical analysis and numerical simulation methods, we mainly investigate some unusual characteristics of light propagating in metamaterials and design a simple narrowband micro Luneburg lens made by metamaterials. The whole the...