Leaky wave radiation from planar anisotropic metamaterial slabs

摘要

We describe an optical leaky waveguide, which is achieved with uniaxially anisotropic metamaterials and can support both forward and backward leaky waves. The radiation behavior is analyzed with a transverse resonance approach, and supported by finite-element simulation results. The remarkable backward leaky nature can be exploited to develop a subdiffraction limit imaging system.