title: Saturation effects on the coupling efficiency of a nonlinear grating coupler.
abstract: We report a theoretical study and a numerical analysis of the coupling efficiency of a grating coupler in a slab waveguide with a nonlinear guiding medium characterized by a saturable index of refraction. A phenomenological relationship is assumed for the saturation of the nonlinearity.
authors.forename: R
authors.initials: R
authors.lastname: Moshrefzadeh