Modal and Coupling Characteristics of Inhomogeneous Dielectric Slab Waveguides. Part II. Lossy Slabs and Pulse Dispersion,
Abstract
The numerical method devised in Part I of this report for lossless slabs is extended for use on slightly lossy slabs and the results for both lossless and lossy slabs are used to investigate the behavior of pulses in such structures. It is found that the attenuation constant in a guide with an asymmetric structure depends quite sensitively upon the degree of asymmetry, and that it might prove feasible to adjust the attenuation through essentially non-loss related parameters of the guide. The limitations of a widely used method for analyzing single-mode time dispersion of a pulse on a waveguide are pointed out. It is concluded that single-mode dispersion in a guide structure is actually not a problem, since attenuation will almost always obliterate the signal before appreciable broadening occurs. Finally, the limitations on the use of slab-like structures due to spatial broadening effects are briefly pursued.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1974
- Accession Number
- ADA008628
Entities
People
- David Chang
- Edward F. Kuester
Organizations
- University of Colorado Boulder