Comparison of losses in imperfect surface-diffused and buried optical waveguides
- 1 May 1979
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 4 (5) , 149-151
- https://doi.org/10.1364/ol.4.000149
Abstract
Theoretical expressions for the scattering losses caused by surface imperfections in both buried guiding layers with a cosh−2 (x/d) index distribution and surface-diffused waveguides with an exponential profile are presented. Theoretical comparison of radiation losses in buried, surface-diffused, and uniform abrupt guides indicates that, in general, buried layers have lower losses, in agreement with experimental evidence.Keywords
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