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Coherent interactions between discrete spatial solitons in light-induced planar waveguide arrays

Xiao Fa-Jun Zhang Peng Liu Sheng Zhao Jian-Lin

Coherent interactions between discrete spatial solitons in light-induced planar waveguide arrays

Xiao Fa-Jun, Zhang Peng, Liu Sheng, Zhao Jian-Lin
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Publishing process
  • Received Date:  06 July 2007
  • Accepted Date:  09 November 2007
  • Published Online:  05 February 2008

Coherent interactions between discrete spatial solitons in light-induced planar waveguide arrays

  • 1. 西北工业大学理学院,光信息科学与技术研究所,陕西省光信息技术重点实验室,西安 710072

Abstract: The coherent interactions between one-dimensional discrete spatial optical solitons, derived by Petviashvili iteration method, are numerically investigated with the split-step beam propagation method in light-induced planar waveguide arrays. The influences of the initial phase difference, the soliton peak intensities, the periods and intensities of the writing beams for waveguide arrays, and the amplitudes of the externally bias fields on the interactions between two discrete solitons are analyzed in detail. It is found that the interactions between two parallel discrete solitons with different initial phase differences behave in a way similar to that encountered in continuous media, i.e., in-phase (out-of-phase) discrete solitons attract (repel) each other, and the intermediates are always accompanied with energy transfer. In addition, the interaction processes are influenced by the variations of soliton peak intensities, the configurations of the light-induced waveguide arrays, and the amplitudes of the external bias fields.

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