Nanoscale light confinement and guiding are new growing areas of modern research with potential applications in nearfield microscopy, compact optoelectronics, all-optical circuitry and integrated photonics. This book introduces readers to anisotropy-based metamaterial approach for focusing and guiding light in the nano-domain and discusses a spectrum of phenomena specific to light propagation in nanostructures. The methods of design and unique properties of metamaterial waveguides such as fiber compatibility, virtual absence of mode cutoff and negative refractive index are described. The...