Surface and leaky modes of multilayered omega structures

We investigate the discrete real and complex solutions of the modal equation of an asymmetric pseudochiral slab waveguide, in which both the film and the substrate are pseudochiral media. When the pseudochiral parameter exceeds a certain transition value, power leakage occurs since one of the characteristic,waves ceases to be internally reflected at the film-substrate interface. The analysis includes a parametric study of the effect of the media on the propagation characteristics of multilayered omega structures. The dependence of the propagation characteristics on the frequency is also addressed.