title: Tailored bandgaps: iterative algorithms of diffractive optics.
abstract: A diffractive optics design method based on a phase retrieval algorithm and carrier grating coding is modified to enable designing of photonic bandgap reflectances. Discrete and continuous signals are designed for a fiber grating to demonstrate the capability of the approach. The method is proved a versatile tool for synthesizing reflectance spectra of periodic structures.
authors.affiliation: Department of Physics and Mathematics, University of Eastern Finland, Joensuu 80101, Finland. tuomas.vallius@gmail.com
authors.forename: Tuomas
authors.initials: T
authors.lastname: Vallius