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Abstract
A novel analytic solution to field distribution is used to calculate the intensity distribution for channel waveguides with a two-dimensional diffusion-type refractive index profile. Composition profiles for the waveguides are obtained by applying the two-dimensional diffusion theory to treat the case of isotropic sideways diffusion. The dependence of the field distributions on the width/depth ratio is studied as an aid to the design of modulators and switches for integrated optics.
Acknowledgements
We gratefully acknowledge helpful discussions with members of Cada’s photonics research group.
Additional information
Funding
The authors gratefully acknowledge the financial support provided to this study by NSERC (Natural Sciences and Engineering Research Council) and NSERC’s CREATE (Collaborative Research Training Experience) Program ASPIRE (Applied Science in Photonics and Innovative Research in Engineering), both of Canada, also by the projects “New creative teams in priorities of scientific research” and the IT4Innovations Centre of Excellence project (CZ.1.05/1.1.00/02.0070), Czech Republic.