title: Confined modes in dual-state two-dimensional waveguides.
abstract: We consider the confined modes in dual-state two-dimensional waveguides in which each slab segment of waveguides can support two vertically confined modes with different effective indices. A matrix formulation is developed to extend the conventional effective-index method to investigate the two-dimensional confinement in multistate waveguides. The results are presented and discussed.
authors.forename: C
authors.initials: C
authors.lastname: Gu
authors.forename: P
authors.initials: P
authors.lastname: Yeh
authors.forename: D
authors.initials: D
authors.lastname: Botez