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Chinese Physics, 2007, Vol. 16(10): 3004-3008    DOI: 10.1088/1009-1963/16/10/031
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Oscillation of spatial solitons in a waveguide with a symmetrical refractive index profile

Dong Liang-Wei(董亮伟), Jin Hong-Zhen(金洪震), and Wang Hui(王辉)
Institute of Information Optics of Zhejiang Normal University, Jinhua 321004, China
Abstract  Dynamics of (1+1)D spatial solitons in a Kerr medium with a transversely symmetrical refractive index profile is investigated. Propagation of solitons is analysed theoretically by using an effective-particle approach. Analytical results show that the soliton oscillates periodically with a variable acceleration. The expression of oscillatory period is derived by introducing a concept of `average acceleration'. Both acceleration and oscillatory period are determined by the parameters of the input soliton and the waveguide. Propagations of solitons are simulated numerically and good agreement is obtained between the theoretical and numerical results.
Keywords:  effective-particle approach      effective `acceleration'      oscillatory period  
Received:  21 February 2007      Revised:  28 March 2007      Accepted manuscript online: 
PACS:  42.65.Tg (Optical solitons; nonlinear guided waves)  
  42.65.Hw (Phase conjugation; photorefractive and Kerr effects)  
  42.65.Wi (Nonlinear waveguides)  
Fund: Project supported by the Natural Science Foundation of Zhejiang Province, China (Grant No Y105061) and the Department of Education of Zhejiang Province (Grant No 20060493).

Cite this article: 

Dong Liang-Wei(董亮伟), Jin Hong-Zhen(金洪震), and Wang Hui(王辉) Oscillation of spatial solitons in a waveguide with a symmetrical refractive index profile 2007 Chinese Physics 16 3004

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