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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 23171–23187

Light bullets in waveguide arrays: spacetime-coupling, spectral symmetry breaking and superluminal decay [Invited]

Falk Eilenberger, Stefano Minardi, Alexander Szameit, Ulrich Röpke, Jens Kobelke, Kay Schuster, Hartmut Bartelt, Stefan Nolte, Andreas Tünnermann, and Thomas Pertsch  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 23171-23187 (2011)

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We investigate the effects of the space-time coupling (STC) on the nonlinear formation and propagation of Light Bullets, spatiotemporal solitons in which dispersion and diffraction along all dimensions are balanced by nonlinearity, through periodic media with a weak transverse modulation of the refractive index, i.e. waveguide arrays. The STC arises from wavelength dependence of the strength of inter-waveguide coupling and can be tuned by variation of the array geometry. We show experimentally and numerically that the STC breaks the spectral symmetry of Light Bullets to a considerable degree and modifies their group velocity, leading to superluminal propagation when the Light Bullets decay.

© 2011 OSA

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(190.6135) Nonlinear optics : Spatial solitons
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Waveguide Arrays

Original Manuscript: September 1, 2011
Revised Manuscript: October 18, 2011
Manuscript Accepted: October 21, 2011
Published: November 1, 2011

Virtual Issues
Nonlinear Optics (2011) Optical Materials Express
(2011) Advances in Optics and Photonics

Falk Eilenberger, Stefano Minardi, Alexander Szameit, Ulrich Röpke, Jens Kobelke, Kay Schuster, Hartmut Bartelt, Stefan Nolte, Andreas Tünnermann, and Thomas Pertsch, "Light bullets in waveguide arrays: spacetime-coupling, spectral symmetry breaking and superluminal decay [Invited]," Opt. Express 19, 23171-23187 (2011)

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