Radiation fields of dielectric optical waveguides
Abstract
A method of measuring the far field radiation pattern of dielectric optical waveguides is presented. The patterns of three layer and five layer structures, obtained using this technique, are given. Matching the experimental results with patterns calculated using the theory of layered waveguides determines the geometry and index of refraction profile of the waveguide. Dispersion characteristics and radiation fields of an optical stripline waveguide radiating into free space are calculated. The halfpower beamwidth of the fundamental mode in a plane parallel to the dielectric layers is used as an indication of the degree of optical confinement under the stripe. Plots of the beamwidth versus the various waveguide parameters indicate the parameter values which give the best optical confinement. An approximate, and computationally simpler, method of calculating this beamwidth is also discussed.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1979
- Bibcode:
- 1979PhDT.......113S
- Keywords:
-
- Dielectrics;
- Far Fields;
- Optical Waveguides;
- Radiation Distribution;
- Numerical Analysis;
- Parallel Plates;
- Propagation Modes;
- Refractivity;
- Communications and Radar