title: Inhibition of light tunneling in waveguide arrays.
abstract: We report the observation of almost perfect light tunneling inhibition at the edge and inside laser-written waveguide arrays due to band collapse. When the refractive index of the guiding channels is harmonically modulated along the propagation direction and out-of-phase in adjacent guides, light is trapped in the excited waveguide over a long distance due to resonances. The phenomenon can be used for tuning the localization threshold power.
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-University Jena, 07743 Jena, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Szameit
authors.forename: Y V
authors.initials: YV
authors.lastname: Kartashov
authors.forename: F
authors.initials: F
authors.lastname: Dreisow
authors.forename: M
authors.initials: M
authors.lastname: Heinrich
authors.forename: T
authors.initials: T
authors.lastname: Pertsch
authors.forename: S
authors.initials: S
authors.lastname: Nolte
authors.forename: A
authors.initials: A
authors.lastname: Tünnermann
authors.forename: V A
authors.initials: VA
authors.lastname: Vysloukh
authors.forename: F
authors.initials: F
authors.lastname: Lederer
authors.forename: L
authors.initials: L
authors.lastname: Torner