Electromagnetic characteristics of metamaterial cloak covered dielectric cylinder illuminated by electric line source

Electromagnetic characteristics of the dielectric cylinder covered by the cylindrical cloak are investigated in detail. Analytical expressions of electric field are derived and validated. Furthermore, effects of different kinds of loss on the performance of the cloak are studied. It is shown that if loss does not follow the same property as the constitutive tensor of the anisotropic and inhomogeneous cloak, electric fields could transmit into the inner dielectric cylinder. The authors believe that the results are helpful for practical applications.