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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 26 — Dec. 20, 2010
  • pp: 27493–27498

Formation of higher-band dark gap solitons in one dimensional waveguide arrays

Rong Dong, Christian E. Rüter, Daohong Song, Jingjun Xu, and Detlef Kip  »View Author Affiliations

Optics Express, Vol. 18, Issue 26, pp. 27493-27498 (2010)

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We experimentally observe the formation of spatial dark gap solitons in higher bands in one-dimensional waveguide arrays possessing a saturable defocusing nonlinearity. By using the prism-coupler scheme, pure Floquet-Bloch modes of higher bands are excited and dark gap solitons are formed due to the counteraction of normal diffraction and the defocusing nature of the photovoltaic nonlinearity. The modulation of refractive index induced by the soliton formation is demonstrated by the guidance of a low-power probe beam in the waveguide array sample. Additionally, the phase structure of dark solitons formed in the second band is discussed.

© 2010 OSA

OCIS Codes
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.5330) Nonlinear optics : Photorefractive optics
(230.7370) Optical devices : Waveguides
(190.6135) Nonlinear optics : Spatial solitons

ToC Category:
Nonlinear Optics

Original Manuscript: November 3, 2010
Revised Manuscript: December 8, 2010
Manuscript Accepted: December 10, 2010
Published: December 14, 2010

Rong Dong, Christian E. Rüter, Daohong Song, Jingjun Xu, and Detlef Kip, "Formation of higher-band dark gap solitons in one dimensional waveguide arrays," Opt. Express 18, 27493-27498 (2010)

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