title: Observation of migrating transverse Anderson localizations of light in nonlocal media.
abstract: We report the experimental observation of the interaction and attraction of many localized modes in a two-dimensional system realized by a disordered optical fiber supporting transverse Anderson localization. We show that a nonlocal optically nonlinear response of thermal origin alters the localization length by an amount determined by the optical power and also induces an action at a distance between the localized modes and their spatial migration. Evidence of a collective and strongly interacting regime is given.
authors.affiliation: IPCF-CNR c/o Dipartimento di Fisica, Università "La Sapienza", Piazzale Aldo Moro, n. 5, 00185 Rome, Italy and Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena, 291 00161 Roma, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Leonetti
authors.affiliation: Department of Electrical Engineering and Computer Science, University of Wisconsin-Milwaukee Milwaukee, Wisconsin 53201, USA.
authors.forename: Salman
authors.initials: S
authors.lastname: Karbasi
authors.affiliation: Department of Electrical Engineering and Computer Science, University of Wisconsin-Milwaukee Milwaukee, Wisconsin 53201, USA.
authors.forename: Arash
authors.initials: A
authors.lastname: Mafi
authors.affiliation: ISC-CNR and Department of Physics, University Sapienza, Piazzale Aldo Moro 5, I-00185 Roma, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Conti
mesh_terms: D007834:Lasers; D008027:Light; D008855:Microscopy, Electron, Scanning / Q000295:instrumentation / Q000379:methods; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055095:Optics and Photonics / Q000295:instrumentation / Q000379:methods*