title: Quasi-BLOCH oscillations in curved coupled optical waveguides.
abstract: We report the observation of quasi-Bloch oscillations, a recently proposed, new type of dynamic localization in the spatial evolution of light in a curved coupled optical waveguide array. By spatially resolving the optical intensity at various propagation distances, we show the delocalization and final relocalization of the beam in the waveguide array. Through comparisons with other structures, we show that this dynamic localization is robust beyond the nearest-neighbor tight-binding approximation and exhibits a wavelength dependence different from conventional dynamic localization.
authors.affiliation: Department of Electrical and Computer Engineering and Institute for Optical Science, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada. arash.joushaghani@utoronto.ca
authors.forename: Arash
authors.initials: A
authors.lastname: Joushaghani
authors.forename: Rajiv
authors.initials: R
authors.lastname: Iyer
authors.forename: Joyce K S
authors.initials: JK
authors.lastname: Poon
authors.forename: J Stewart
authors.initials: JS
authors.lastname: Aitchison
authors.forename: C Martijn
authors.initials: CM
authors.lastname: de Sterke
authors.forename: Jun
authors.initials: J
authors.lastname: Wan
authors.forename: Marc M
authors.initials: MM
authors.lastname: Dignam