Optical circuits from anisotropic films

The theory for inductive and capacitive elements realized from anisotropic slabs is developed. These elements are shown to have low sensitivity to angle of incidence and nondispersive performance. It is therefore possible to realize optical circuits that perform more effectively than would be possible with isotropic materials. Low-pass filtering and antireflection examples are given. Desirable anisotropy can be achieved using a metal-insulator stack operating in the effective-medium metamaterial regime. The approach allows circuit synthesis at optical wavelengths.