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Chinese Physics, 2004, Vol. 13(9): 1447-1453    DOI: 10.1088/1009-1963/13/9/015
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

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 
a Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; ;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
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.
Keywords:  stochastic perturbation      correlation      submergence of dark soliton      control  
Received:  09 January 2004      Revised:  16 March 2004      Accepted manuscript online: 
PACS:  42.65.Tg (Optical solitons; nonlinear guided waves)  
  42.81.Dp (Propagation, scattering, and losses; solitons)  
  02.60.Cb (Numerical simulation; solution of equations)  
Fund: 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).

Cite this article: 

Li Hong (李宏), Wang Tie-Jun (王铁军), Huang De-Xiu (黄德修), Wang D. N. (王东宁) Effects of correlated perturbations on dark soliton propagation and interaction 2004 Chinese Physics 13 1447

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