The Asymmetric Transmission Depending on the Propagation Direction Using Spoof Surface Plasmon Polaritons

Abstract

In this letter, we propose a new structure possessing asymmetric transmission. For a linearly polarized wave illuminates on the structure in two opposite directions, the device behaves transparently or like an absorber. Such one-way propagation characteristic results from polarization conversion and polarization selective absorption performance of the structure. Simulation results indicate that the structure achieves a linearly polarized EM wave with asymmetric transmission. The work provides an effective method to design an asymmetric transmission structure.