title: Observation of defect-free surface modes in optical waveguide arrays.
abstract: We report on the experimental observation of novel defect-free surface modes predicted theoretically for modulated photonic lattices [I. L. Garanovich et al., Phys. Rev. Lett. 100, 203904 (2008)10.1103/PhysRevLett.100.203904]. We generate the linear surface modes in truncated arrays of periodically curved optical waveguides created in fused silica by a laser direct-writing technique. Our results demonstrate that the degree of surface wave localization can be controlled by selecting the waveguide bending amplitude.
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Szameit
authors.forename: Ivan L
authors.initials: IL
authors.lastname: Garanovich
authors.forename: Matthias
authors.initials: M
authors.lastname: Heinrich
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Sukhorukov
authors.forename: Felix
authors.initials: F
authors.lastname: Dreisow
authors.forename: Thomas
authors.initials: T
authors.lastname: Pertsch
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar