A Finite Element Model of Dichroic Terahertz Filters

using finite element approximation of electromagnetic wave propagation problem, we have developed and implemented a finite element model of dichroic terahertz filters with complex structure by unit cell approach. Unit cells are considered as waveguides with specific boundary conditions. The model is implemented by COMSOL software system as ready-to-use tool for dichroic terahertz filters design or refinement. Simulation results show excellent agreement with known experimental data.