title: Optical multiband vector breathers in tunable waveguide arrays.
abstract: We investigate multiband optical breathers in a voltage-adjustable array of coupled waveguides in nematic liquid crystals. Symmetric breathers resulting from vector composition of modes from two bands are observed over large propagation distances and are described in terms of the Floquet-Bloch theory.
authors.affiliation: Nonlinear Optics and Optoelectronics Laboratory, Italian Institute for the Physics of Matter, University Roma Tre, Via della Vasca Navale 84, 0Q146 Rome, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fratalocchi
authors.forename: Gaetano
authors.initials: G
authors.lastname: Assanto
authors.forename: Kasia A
authors.initials: KA
authors.lastname: Brzdakiewicz
authors.forename: Mirek A
authors.initials: MA
authors.lastname: Karpierz