中国物理B ›› 2004, Vol. 13 ›› Issue (9): 1447-1453.doi: 10.1088/1009-1963/13/9/015

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Effects of correlated perturbations on dark soliton propagation and interaction

王东宁1, 王铁军2, 黄德修2, 李宏3   

  1. (1)Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; (2)Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (3)Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of Physics, Hubei Normal University, Huangshi 435002, China
  • 收稿日期:2004-01-09 修回日期:2004-03-16 出版日期:2004-06-21 发布日期:2005-06-21
  • 基金资助:
    Project supported by the National High Technology Development Programme of China (Grant No 2002AA312050), and the Important Program of Education Department of Hubei Province, China (Grant No 2002Z00005).

Effects of correlated perturbations on dark soliton propagation and interaction

Li Hong (李宏)ab, Wang Tie-Jun (王铁军)a, Huang De-Xiu (黄德修)a, Wang D. N. (王东宁)c    

  1. a Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; b ;Department of Physics, Hubei Normal University, Huangshi 435002, China; c Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
  • Received:2004-01-09 Revised:2004-03-16 Online:2004-06-21 Published:2005-06-21
  • Supported by:
    Project supported by the National High Technology Development Programme of China (Grant No 2002AA312050), and the Important Program of Education Department of Hubei Province, China (Grant No 2002Z00005).

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摘要： Correlated perturbations are considered in a dark soliton system, and their effects on soliton propagation and interaction are investigated numerically. These perturbations result in large sidebands, lead to submergence of dark soliton, and enhance the interaction. The correlation amplifies these effects and shortens the distance until submergence. The comparison of the distinction is made between the degradations of these effects on dark soliton and the corresponding bright soliton. It is found that these effects on dark soliton are less than those on bright soliton. Finally the nonlinear gain is introduced to suppress efficiently these effects.

关键词: stochastic perturbation, correlation, submergence of dark soliton, control

Abstract: Correlated perturbations are considered in a dark soliton system, and their effects on soliton propagation and interaction are investigated numerically. These perturbations result in large sidebands, lead to submergence of dark soliton, and enhance the interaction. The correlation amplifies these effects and shortens the distance until submergence. The comparison of the distinction is made between the degradations of these effects on dark soliton and the corresponding bright soliton. It is found that these effects on dark soliton are less than those on bright soliton. Finally the nonlinear gain is introduced to suppress efficiently these effects.

Key words: stochastic perturbation, correlation, submergence of dark soliton, control

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.81.Dp (Propagation, scattering, and losses; solitons) 02.60.Cb (Numerical simulation; solution of equations)