Excitation of Short Range Surface Plasmon Polariton Mode

摘要

The excitation method of short range surface plasmon polariton mode with hybrid coupler structure is analyzed numerically. Short Range Surface Plasmon Polariton (SRSPP) is one of the transverse-magnetic surface electromagnetic excitation that propagates in a wave like fashion along the metal film or thin metal strip. Since there is a π phase difference on the two metal film surfaces as shown in Fig. 1, SRSPP can not be excited by conventional end-fire method. Here, a novel method of exciting SRSPP mode is proposed.