title: Dark and bright blocker soliton interaction in defocusing waveguide arrays.
abstract: We experimentally demonstrate the interaction of an optical probe beam with both bright and dark blocker solitons formed with low optical light power in a saturable defocusing waveguide array in photorefractive lithium niobate. A phase insensitive interaction of the beams is achieved by means of counterpropagating light waves. Partial and full reflection (blocking) of the probe beam on the positive or negative light-induced defect is obtained, respectively, in good agreement with numerical simulations.
authors.forename: Eugene
authors.initials: E
authors.lastname: Smirnov
authors.forename: Christian E
authors.initials: CE
authors.lastname: Rüter
authors.forename: Milutin
authors.initials: M
authors.lastname: Stepić
authors.forename: Vladimir
authors.initials: V
authors.lastname: Shandarov
authors.forename: Detlef
authors.initials: D
authors.lastname: Kip