HYBRID GUIDED MODES IN BIAXIAL PLANAR WAVE-GUIDES

The mode classes and the propagation constants are determined for hybr id guided modes in biaxial slab waveguides of arbitrary orientation, T he properties of the biaxial media are presented in a coordinate-free manner; therefore, any orientation of the biaxial cover, film, and sub strate media relative to the waveguide can be analyzed, With this rigo rous electromagnetic analysis technique the following information of p ropagating modes in these structures can be obtained: the mode class ( TE, TM, or hybrid) can be identified; the propagation constants can be calculated as a function of the orientation of the cover, film, and s ubstrate regions; and each mode can be uniquely labeled based on decou pled orientations of the waveguide.