Surface plasmon interaction with amplifying MQWs in multilayer kretschmann structure: Wavelength-scale analysis by the method of single expression

Surface plasmons are promising candidates in realization of short distance optical interconnection. However an unavoidable material loss even in noble metals prevents their wide application. Covering dielectric layer of some hundred-nanometer thickness deposited upon the thin metal layer in Kretschmann configuration can operate as a plasmon supported waveguide with lower loss than the bare plasmonic structure. To have an aim an essential increase of plasmonic waves´ propagation distance the dielectric-loaded Kretschmann structure with assistance of amplifying multiple quantum-wells (MQWs) upon it is suggested and analysed. Analysis is carried out for single mode regime of dielectric-loaded plasmonic waveguide. Wavelength scale modelling of optical properties of amplifying multilayer Kretschmann structure is performed by the method of single expression extended for the plane TM wave oblique incidence.