title: Analysis of rectangular-core dielectric waveguides: an accurate perturbation approach.
abstract: We report the exact solution of the scalar-wave equation for a rectangular-core waveguide structure and develop a perturbation analysis for evaluating accurately the propagation characteristics of practical integrated-optical structures. We show that the present method gives results that are more accurate than other analytical methods reported earlier.
authors.forename: A
authors.initials: A
authors.lastname: Kumar
authors.forename: K
authors.initials: K
authors.lastname: Thyagarajan
authors.forename: A K
authors.initials: AK
authors.lastname: Ghatak