REFLECTION AND TRANSMISSION OF GUIDED ELECTROMAGNETIC-WAVES AT AN AIR-CHIRAL INTERFACE AND AT A CHIRAL SLAB IN A PARALLEL-SLATE WAVE-GUIDE

recently, the concept of chirowaveguides, which exhibit some novel and interesting properties due to electromagnetic chirality, was introduc ed and studied elsewhere. In this paper, we analyze theoretically anot her problem associated with chirowaveguides, namely, the problem of re flection and transmission of guided waves at an air-chiral interface a nd at a chiral slab located transversely in a parallel-plate waveguide . The notable features and the role of chirality of the medium on the reflected and transmitted guided waves are discussed, and physical ins ights into these results are provided. It is found that since the guid ed modes inside the chiral region of the waveguide are hybrid, in orde r to satisfy the boundary conditions at interfaces, the reflected and transmitted guided modes in the air regions of the waveguides need to be of TE and TM modes. The motivation behind this study is the potenti al applications of this problem to the design of novel measurement tec hniques for determining material parameters of chiral composites.