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Finite-difference mode solver for curved waveguides with angled and curved dielectric interfaces
Publikationstyp
Journal Article
Date Issued
2011
Sprache
English
Journal
Volume
29
Issue
5
Start Page
691
End Page
699
Article Number
5688431
Citation
Journal of Lightwave Technology 29 (5): 691-699 (2011)
Publisher DOI
Scopus ID
Publisher
IEEE
A finite-difference scheme for accurately analyzing step-index dielectric waveguides with angled and curved dielectric interfaces has been proposed by Chiang Here, this formulation is generalized to take into account a possible curvature of the entire waveguide along the propagation direction, and it is shown how Perfectly Matched Layers can be incorporated in order to accurately compute the bending or curvature loss of dielectric waveguides with step-index profiles of bitry shape. Furthermore, the formulation of the interface equations that relate the fields and their derivatives on both sides of a dielectric interface has been simplified, so that their implementation no longer requires any further explicit conversions between coordinate systems.
Subjects
Bending loss
curvature loss
finite-difference method
DDC Class
621: Applied Physics