Guided-wave characteristics with periodic dielectric waveguides of finite length

摘要

A novel network approach is proposed to analyze periodic dielectric waveguide of finite length. Our approximate analysis is to consider a bounded waveguide problem in which perfectly-conducting walls are introduced, and the periodic corrugation is regarded as consisting of step discontinuities connected by a length of uniform slab waveguide. Application of conservation of complex power technique (CCPT) allows us to take into account of both surface modes and only a few non-surface-modes, and readily derive propagation characteristics of the waveguide with finite periodic corrugations around Bragg interaction region.