title: Comparison of losses in imperfect surface-diffused and buried optical waveguides.
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.
authors.forename: T
authors.initials: T
authors.lastname: Findakly
authors.forename: E
authors.initials: E
authors.lastname: Garmire
authors.forename: H T
authors.initials: HT
authors.lastname: Moon