title: Discrete solitons in coupled active lasing cavities.
abstract: We examine the existence and stability of discrete spatial solitons in coupled nonlinear lasing cavities (waveguide resonators), addressing the case of active defocusing media, where the gain exceeds damping in the low-amplitude limit. A new family of stable localized structures is found: these are bright and gray cavity solitons representing the connections between homogeneous and inhomogeneous states. Solitons of this type can be controlled by discrete diffraction and are stable when the bistability of homogenous states is absent.
authors.affiliation: Nonlinearity and Complexity Research Group, Aston University, Aston Triangle, Birmingham B4 7ET, UK. y.prylepskiy1@aston.ac.uk
authors.forename: Jaroslaw E
authors.initials: JE
authors.lastname: Prilepsky
authors.forename: Alexey V
authors.initials: AV
authors.lastname: Yulin
authors.forename: Magnus
authors.initials: M
authors.lastname: Johansson
authors.forename: Stanislav A
authors.initials: SA
authors.lastname: Derevyanko