title: Observation of two-dimensional nonlocal gap solitons.
abstract: We demonstrate, both theoretically and experimentally, the existence of nonlocal gap solitons in two-dimensional periodic photonic structures with defocusing thermal nonlinearity. We employ liquid-infiltrated photonic crystal fibers and show how the system geometry can modify the effective response of a nonlocal medium and the properties of two-dimensional gap solitons.
authors.affiliation: Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT, Australia.
authors.forename: Per Dalgaard
authors.initials: PD
authors.lastname: Rasmussen
authors.forename: Francis H
authors.initials: FH
authors.lastname: Bennet
authors.forename: Dragomir N
authors.initials: DN
authors.lastname: Neshev
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Sukhorukov
authors.forename: Christian R
authors.initials: CR
authors.lastname: Rosberg
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Krolikowski
authors.forename: Ole
authors.initials: O
authors.lastname: Bang
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar