LOSS CALCULATIONS FOR ANTIRESONANT WAVE-GUIDES

We present a theoretical study of antiresonant waveguides, in cylindri cal and planar geometry, using leaky mode solutions of the vector wave equation. General analytical expressions are derived which describe t he attenuation coefficients of TE, TM, HE, and EH modes of multilayere d leaky waveguides, taking into account material absorption. These exp ressions are compared to numerical solutions and found to give very ac curate results when the leakage loss is low.