DYNAMIC OF ONE DIMENSIONAL WAVE PACKET IN HIGH-ORDER APPROXIMATIONS OF NONLINEAR DISPERSION THEORY

Auteurs-es

  • H TRIKI Badji Mokhtar University P. O. Box 12, 23000 Annaba
  • A EL-AKRMI Badji Mokhtar University P. O. Box 12, 23000 Annaba
  • M M. GHERS Badji Mokhtar University P. O. Box 12, 23000 Annaba

Mots-clés :

High-order nonlinear Schrödinger equation, soliton, optical fiber.

Résumé

We are interested by the soliton state solutions of the higher order nonlinear Schrödinger equation which
models the propagation of solitons in optical fibers. This nonlinear wave equation is solved by using the coupled
amplitude-phase formulation. These gives rise to a coupled pair of equations, which describe the interaction and
dynamics between the amplitude and the phase of the pulse. Integrating one of them, a characteristic equation is
derived. For different particular cases of the dependent nonlinear parameters, various types of soliton solutions
are investigated. In the absence of the third-order dispersion, we have obtained two different families of solitons:
bright soliton in anomalous-dispersion regime and dark soliton in normal dispersion regime. Other family of
bright solitons which is characterized by a simple quadratic dependence of the soliton phase on its amplitude, is
obtained when the third-order dispersion effect is zero. It is specifically investigated the dynamics of solitons in
the presence of third-order dispersion which is well described by the Korteweg-de Vries nonlinear equation.

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Bibliographies de l'auteur-e

H TRIKI, Badji Mokhtar University P. O. Box 12, 23000 Annaba

Department of Physics
Faculty of Sciences

A EL-AKRMI, Badji Mokhtar University P. O. Box 12, 23000 Annaba

Department of Physics
Faculty of Sciences

M M. GHERS, Badji Mokhtar University P. O. Box 12, 23000 Annaba

Department of Physics
Faculty of Sciences

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Publié-e

2004-12-22

Comment citer

TRIKI, H., EL-AKRMI, A., & M. GHERS, M. (2004). DYNAMIC OF ONE DIMENSIONAL WAVE PACKET IN HIGH-ORDER APPROXIMATIONS OF NONLINEAR DISPERSION THEORY. Sciences & Technologie. A, Sciences Exactes, (22), 75–81. Consulté à l’adresse https://revue.umc.edu.dz/a/article/view/223

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