Surface plasmon polaritons can transport optical energy over distances of several dozen micrometers, keeping the diameter of the waveguide far below the diffraction limit. This presentation will discuss the process of surface plasmon-assisted bidirectional light propagation in a metallic nanowire, which was used for remote spectroscopy of a model nanoemitter. This process has been investigated in a specially designed nanostructure consisting of a single, tens of micrometers long silver nanowire and a single up-conversion nanocrystal at its end.
