title: Optical limiting and intensity-dependent diffraction from low-contrast nonlinear periodic media: Coupled-mode analysis.
abstract: The method of multiple scales is used to develop a procedure for obtaining coupled-mode equations in low-contrast nonlinear photonic crystals periodic in one, two, or three dimensions. Coupled-mode equations for three coupled modes in a two-dimensional (2D) hexagonal lattice are obtained in this way and solved numerically. We show that 2D low-contrast nonlinear photonic crystals support optical limiting and intensity-dependent diffraction.
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 Kings College Road, Toronto, Ontario, Canada.
authors.forename: Jamin L
authors.initials: JL
authors.lastname: Sheriff
authors.forename: Irene A
authors.initials: IA
authors.lastname: Goldthorpe
authors.forename: Edward H
authors.initials: EH
authors.lastname: Sargent