title: Observation of discrete gap solitons in one-dimensional waveguide arrays with alternating spacings and saturable defocusing nonlinearity.
abstract: We consider, both experimentally and theoretically, the existence and stability of localized, symmetric, and antisymmetric gap solitons (GSs) in binary lattices of identical waveguides but with alternating spacings. Furthermore, the properties of surface GSs at the boundary of the lattice are explored.
authors.affiliation: Faculty of Electrical Engineering, Helmut Schmidt University, Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Kanshu
authors.forename: C E
authors.initials: CE
authors.lastname: Rüter
authors.forename: D
authors.initials: D
authors.lastname: Kip
authors.forename: V
authors.initials: V
authors.lastname: Shandarov
authors.forename: P P
authors.initials: PP
authors.lastname: Beličev
authors.forename: I
authors.initials: I
authors.lastname: Ilić
authors.forename: M
authors.initials: M
authors.lastname: Stepić