title: Low sideband guided-mode resonant filter.
abstract: A guided-mode resonant filter with low sideband reflections is proposed. It is shown that, for serious reduction of out-of band reflectance, the combination of waveguide-grating filter design with conventional antireflective stack design methods is not adequate. To achieve symmetrical low sideband reflectances, independent control of various layer thicknesses is necessary. At a given illumination angle with appropriate control of the waveguide thickness, a specific resonant grating filter is designed whose out-of-band reflectance on both sides of the resonant peak is well below 10(-4). Even 50 nm away from the peak, on both sides, the out-of-band reflectance remains below 10(-3). Analysis of the variation in the main manufacturing parameters indicates that such filters can be reliably produced with present-day technologies.
authors.affiliation: Telecommunications and Industrial Physics, Commonwealth Scientific and Industrial Scientific Organisation, PO Box 218, Lindfield, Australia.
authors.forename: Z
authors.initials: Z
authors.lastname: Hegedus
authors.forename: R
authors.initials: R
authors.lastname: Netterfield