Mode hybridization and interaction in a metallic meander Fabry-Pérot cavity

Abstract

Periodically corrugated metallic meanders exhibit an enhanced transmission with negative dispersion at visible frequencies, which is induced by simultaneous excitation and interaction of short range and long range surface plasmon polaritons. When two metallic meanders are stacked together to form a Fabry‐Pérot cavity, complex mode behavior is revealed due to additional interaction with the cavity modes. To gain more physical insight into this plasmonic system, we study numerically how mode hybridization between the surface plasmon polaritons from the two meander mirrors occurs, and how they interact furthermore with the cavity modes. Based on this effect, we envision potential plasmonic functional devices.