title: Diffraction engineering in arrays of photonic crystal waveguides.
abstract: Light propagation in uniform arrays of photonic crystal waveguides is studied. We demonstrate that, in stark contrast to the case of conventional waveguide arrays, diffraction can be tailored both in magnitude and sign by varying only the spacing between adjacent waveguides. Diffraction management in ultracompact arrays of straight photonic crystal waveguides is demonstrated by solving Maxwell's equations through the time-domain finite-element method.
authors.affiliation: Istituto Nazionale per la Fisica della Materia, Dipartimento di Elettronica per l'Automazione, Università di Brescia, via Branze 38, 25123 Brescia, Italy. andrea.locatelli@ing.unibs.it
authors.forename: Andrea
authors.initials: A
authors.lastname: Locatelli
authors.forename: Matteo
authors.initials: M
authors.lastname: Conforti
authors.forename: Daniele
authors.initials: D
authors.lastname: Modotto
authors.forename: Costantino
authors.initials: C
authors.lastname: De Angelis