Indium Antimonide Based Terahertz Plasmonic Ring Resonator Filter

Abstract

This paper proposes a tunable filter composed of a semiconductor-insulator-semiconductor (SIS) waveguide with a ring resonator at terahertz(THz) frequency. The two-dimensional study of the proposed structure has been done using the finite element method. It is observed that the device can be used for filtering THz frequency within the range of 0.4 THz to 0.9 THz by varying the structural parameters. The simulated structure is a promising candidate for an integrated optical circuit and terahertz devices as a filter. The results of the simulations are discussed in detail. © Published under licence by IOP Publishing Ltd.