Now showing items 1-10 of 10

  • Asymmetric matter-wave solitons at nonlinear interfaces 

    Ye, F; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2006-12)
    Article
    Restricted access - publisher's policy
    We predict the existence and study the basic properties of strongly asymmetric matter wave solitons that form at the interface produced by regions with different interatomic interaction strengths in pancake Bose-Einstein ...
  • Bragg guiding of domainlike nonlinear modes and kink arrays in lower-index core structures 

    Ye, F; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2008-06)
    Article
    Restricted access - publisher's policy
    We introduce a novel class of stable nonlinear modes trapped in a lower-index film core sandwiched between two optical lattices, or in the cylindrical core of a radial lattice, imprinted in defocusing media. Such a family ...
  • Enhaced soliton interactions by inhomogeneous nonlinearity and nonlocality (artno 33812) 

    Ye, F; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2007-09)
    Article
    Restricted access - publisher's policy
    Ocean waves are complex and often turbulent. While most ocean-wave interactions are essentially linear, sometimes two or more waves interact in a nonlinear way. For example, two or more waves can interact and yield waves ...
  • Light bullets in Bessel optical lattices with spatially modulated nonlinearity 

    Ye, F; Kartashov, Yaroslav V.; Hu, B; Torner Sabata, Lluís (2009-07-06)
    Article
    Open Access
    We address the stability of light bullets supported by Bessel optical lattices with out-of-phase modulation of the linear and nonlinear refractive indices. We show that spatial modulation of the nonlinearity significantly ...
  • Nonlinear switching of low-index defect modes in photonic lattices 

    Ye, F; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2008-08)
    Article
    Restricted access - publisher's policy
    We address nonlinear signal switching between two low-index defect channels induced in periodic optical lattices. In contrast to conventional directional couplers, where the guiding mechanism is total internal reflection ...
  • Nonlocal surface dipoles and vortices 

    Ye, F; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2008-03)
    Article
    Restricted access - publisher's policy
    We predict the existence and address the stability of two-dimensional surface solitons featuring topologically complex shapes, including dipoles, vortices, and bound states of vortex solitons, at the interface of nonlocal ...
  • Power-dependent soliton steering in thermal nonlinear media 

    Ye, F; Kartashov, Yaroslav V.; Hu, B; Torner Sabata, Lluís (2009-08)
    Article
    Restricted access - publisher's policy
    We address the existence and properties of optical solitons excited in thermal nonlinear media with a transverse refractive index gradient. The interplay between the nonlocality of the thermal nonlinearity and the linear ...
  • Stabilization of dipole solitons in nonlocal nonlinear media 

    Ye, F; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2008-04)
    Article
    Restricted access - confidentiality agreement
    We address the stabilization of dipole solitons in nonlocal nonlinear materials by two different approaches. First, we study the properties of such solitons in thermal nonlinear media, where the refractive index landscapes ...
  • Surface waves in defocusing thermal media 

    Kartashov, Yaroslav V.; Ye, F; Vysloukh, Victor A.; Torner Sabata, Lluís (2007-08)
    Article
    Restricted access - publisher's policy
    We predict that the interface of materials with defocusing thermal nonlinearities supports stable fundamental and higher-order surface waves when the opposite edges of the medium are maintained at different temperatures. ...
  • Vector mixed-gap surface solitons 

    Kartashov, Yaroslav V.; Ye, F; Torner Sabata, Lluís (2006-05)
    Article
    Restricted access - publisher's policy
    We elucidate the properties of mixed-gap vector surface solitons supported by the interface between a uniform medium and an optical lattice imprinted in a Kerr-type nonlinear media. The components of such mixed-gap solitons ...