Download or read book Perturbation Theory of Modes in Nonuniform Waveguides written by Omar Rafik Asfar and published by . This book was released on 1975 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a perturbation technique based on the method of multiple scales for the treatment of nonuniformities in both closed and open waveguide systems. Furnishes uniform asymptotic expansions for some long distance communication problems including the propagation of transverse magnetic (TM) modes in conducting circular waveguides having slowly varying cross sections, parallel-plate and circular waveguides having perfectly conducting sinusoidally perturbed walls, and dielectric or optical fiber waveguides having sinusoidally perturbed core-cladding interfaces and supporting hybrid modes.