Abstract
In this contribution we present the accurate analysis and modeling of periodic optical structures that are finding wide application in photonics. The EM analysis is performed by two different 3D full-wave methods, the Transmission Line Matrix-Integral Equation (TLMIE) and the Generalized Transverse Resonance Diffraction (GTRD). TLMIE is a 3D full-wave hybrid technique in the time-domain which combines the advantages of the numerical TLM method and those of the analytical Green's functions representation for the free-space region, thus providing exact boundary conditions at optical frequencies. In GTRD the dyadic Green's function of a loaded box is used for the modeling of the layered structure, combined with Ohm's law formulation of the volume currents. By using the pre- and post-processing tools of TLMIE and GTRD methods, we investigate the dynamic of the EM field in and outside the structure and evaluate the frequency response of the laminated polarizer behaving as a negative uniaxial crystals. The calculated S-parameters are compared with measured data showing good agreement.
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