Diffraction and backcoupling of surface plasmon oscillations in a planar waveguide

Abstract

A theoretical approach that accounts for diffraction and backcoupling of surface plasmon (SP) oscillations on a metallized planar waveguide is described. The model explains previously reported experimental studies related to the development of SP based optical fiber sensors and can be used to determine design parameters. Results indicate that a planar waveguide metallization scheme similar to that employed in the single mode fiber configuration is a feasible alternative for the construction of integrated optics sensor devices.