Propagation and Focusing of Surface Plasmon in Metal Nano Slab Waveguides

Abstract

A plasmonic waveguide is a metal optical waveguide that utilizes surface plasmon polaritons propagating at a metal-dielectric interface. The optical beam radius can be reduced to the nanometer order beyond the diffraction limit of light by utilizing a negative dielectric instead of a dielectric. We describe recent progress of our study about metal nano slab waveguides and future perspectives.