ANALYSIS OF CIRCULAR CHIRAL DIELECTRIC WAVE-GUIDES

The general eigenequations and the field expressions for circular wave guides containing chiral material in both the core and the cladding ar e given in a simple formulation. The results indicate that there are t wo types of field distribution which is related to the operating wavel ength and chiral admittance. When the chiral admittance is larger than a critical value, the fields of one kind of circularly polarized wave in the core become exponentially-like damping in the transverse direc tion. Based on the eigenequations, the characteristics of a circular w aveguide with chiral medium filled in the core are investigated. The r elation between the cutoff frequency and the chiral admittance, the di spersion curves for some modes with different angular mode number and the transverse distribution of fields are presented. Some features dif ferent from the ordinary circular waveguide are resulted.