| Temperature effects of dark solitons on the self-deflection of bright solitons in a separate bright-dark soliton pair |
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| 作者姓名： | ZHANG GuangYong LIU JinSong ZHANG HuiLan WANG Cheng LIU ShiXiong |
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| 作者单位： | [1]Institute of Optoelectronics Science and Engineering, State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China [2]Department of Physics, China University of Geosciences, Wuhan 430074, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （Grant Nos. 10574051 and 10174025） and the Research Foundation for 0utstanding Young Teachers, China University of Geosciences （Wuhan） （Grant No. CUGQNL0621） |
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| 摘 要： | Based on the theory of one-dimensional separate soliton pairs formed in a serial photorefractive crystal circuit, we investigated the temperature effects of the dark soliton on the self-deflection of the bright soliton in a bright-dark soliton pair. The numerical results obtained by solving the nonlinear propaga-tion equation showed that the bright soliton moves on a parabolic trajectory in the crystal and its spa-tial shift changed with the temperature of the dark soliton. The higher the temperature of the dark soli-ton was, the smaller the spatial shift of the bright soliton was. The self-bending process was further studied by the perturbation technique, and the results were found to be in good agreement with that obtained by the numerical method.
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| 关 键 词： | 暗孤子 明孤子 自偏转 明暗孤子对 温度效应 |
| 收稿时间： | 8 September 2006 |
| 修稿时间： | 2006-09-082006-09-29 |
Temperature effects of dark solitons on the self-deflection of bright solitons in a separate bright-dark soliton pair |
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| ZHANG GuangYong LIU JinSong ZHANG HuiLan WANG Cheng LIU ShiXiong.Temperature effects of dark solitons on the self-deflection of bright solitons in a separate bright-dark soliton pair[J].Chinese Science Bulletin,2007,52(6):725-731. |
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| Authors: | Zhang GuangYong Liu JinSong Zhang HuiLan Wang Cheng Liu ShiXiong |
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| Institution: | (1) Institute of Optoelectronics Science and Engineering, State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan, 430074, China;(2) Department of Physics, China University of Geosciences, Wuhan, 430074, China |
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| Abstract: | Based on the theory of one-dimensional separate soliton pairs formed in a serial photorefractive crystal circuit, we investigated the temperature effects of the dark soliton on the self-deflection of the bright soliton in a bright-dark soliton pair. The numerical results obtained by solving the nonlinear propaga- tion equation showed that the bright soliton moves on a parabolic trajectory in the crystal and its spa- tial shift changed with the temperature of the dark soliton. The higher the temperature of the dark soli- ton was, the smaller the spatial shift of the bright soliton was. The self-bending process was further studied by the perturbation technique, and the results were found to be in good agreement with that obtained by the numerical method. |
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| Keywords: | nonlinear optics spatial optical solitons photorefractive effects self-deflection |
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