COMPUTATION OF PROPAGATION CHARACTERISTICS OF CHIRAL LAYERED WAVE-GUIDES

In this paper the authors present a systematic numerical method to ana lyze multilayered linear chiral waveguides, The Maxwell's equations ar e solved inside each layer and the transversal fields at the top and b ottom of the whole layered medium are then related, This relation, tog ether with the use of the proper transversal impedance matrices, makes it possible to obtain the dispersion relation of the waveguide, Since this technique is mainly numerical, the whole procedure is practicall y independent of both the number of layer and linear properties of the materials, In addition to the proper modes, the authors also show the behavior of the improper leaky modes of different chiral waveguides, In all the analyzed cases and for the considered ranges, the authors h ave found that the presence of chiral material does not substantially change the qualitative behavior of the dispersion relation, although i t offers another parameter to control the propagation characteristics of the waveguide.