A new kind of spoof surface plasmon polaritons structure with periodic loading of T-shape grooves

Abstract

A new kind of spoof surface plasmon polaritons (SSPPs) structure with periodic loading of T-shape grooves is introduced in this paper. Dispersion property of this proposed structure is investigated in detail, and comparisons of dispersion property of the proposed structure and that of the traditional SSPPs structures, including structure with rectangular grooves and structure with trapezoidal grooves, are also made. The SSPPs field confinement along the orthogonal directions of the proposed structure is studied. Also, some researches on the transmission loss and propagation length of the SSPPs on the proposed structure are made. All the simulation and calculations show that the proposed structure have a great improvement of SSPPs field confinement and the transmission loss is low.