title: Confining light flow in weakly coupled waveguide arrays by structuring the coupling constant: towards discrete diffractive optics.
abstract: Structuring the coupling constant in coupled waveguide arrays opens up a new route towards molding and controlling the flow of light in discrete structures. We show coupled mode theory is a reliable yet very simple and practical tool to design and explore new structures of patterned coupling constant. We validate our simulation and technological choices by successful fabrication of appropriate III-V semiconductor patterned waveguide arrays. We demonstrate confinement of light in designated areas of one-dimensional semi-conductor waveguide arrays.
authors.affiliation: Laboratory of Photonics and Nanostructures -UPR20 CNRS, Route de Nozay, Marcoussis, F-91460, France. nadia.belabas@lpn.cnrs.fr
authors.forename: Nadia
authors.initials: N
authors.lastname: Belabas
authors.forename: Sophie
authors.initials: S
authors.lastname: Bouchoule
authors.forename: Isabelle
authors.initials: I
authors.lastname: Sagnes
authors.forename: Juan Ariel
authors.initials: JA
authors.lastname: Levenson
authors.forename: Christophe
authors.initials: C
authors.lastname: Minot
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Moison