Surface plasmon polaritons on nanostructured surfaces and thin films

Surface plasmon polariton behaviour on periodically nanostructured metal surfaces and thin films is discussed. Such metallic nanostructures act as polaritonic crystals for surface polaritons, in analogy to photonic crystals for light waves. In this paper surface polariton Bloch mode spectrum on the structured surfaces and films is overviewed and manifestations of various surface plasmon modes in the optical properties of metallic nanostrnctures are considered. Surface plasmon polaritons me emerging as a new optical information carrier that enables signal manipulation and processing on the subwavelength scale and development of integrated photonic circuits.