Plasmon-induced transparency in an air–dielectric grooved parallel-plate terahertz waveguide

In this article, we examine plasmon induced transparency (PIT) effect in a parallel plate waveguide (PPWG) comprising of two similar pyramidal shaped grooves. One the grooves is filled with air, while other dielectric material whose refractive index can be varied. The resonant frequencies corresponding to air and proposed configuration results window which modulated material. approach provides flexibility actively control without changing physical dimensions. We examined field profiles region clearly depict PIT effect. have employed an analytical model based upon three-level plasmonic validate our numerical findings. Further, switching tunability by including silicon layers between conductivity Actively tunable response terahertz waveguides significant construction active components.