光学学报, 2006, 26 (4): 491, 网络出版: 2006-05-17   

色散补偿光纤通信系统中孤子之间的相互作用

Interactions of Solitons in Dispersion Compensation Fiber Nonlinear Communication System
钟卫平 1,2,*易林 2
作者单位
1 广东省顺德学院电子工程系, 顺德 528300
2 华中科技大学物理系激光技术国家重点实验室, 武汉 430074
摘要
采用变分原理与位力定理研究了非线性光通信系统色散补偿方案中,相邻孤子之间的相互作用对孤子传输特性的影响。结果表明:在相位匹配与等幅孤子注入时,在普通单模光纤中这两个孤子先相互吸引,而后又相互排斥,显现周期性碰撞的变化规律,形成束缚孤子态,而在色散补偿光纤中传输的孤子之间不发生碰撞;对相位不匹配与等幅孤子注入,孤子之间发生分离;对相位匹配和不等幅孤子注入,在色散补偿光纤中传输的孤子,如果初始间隔φ0越小,应注入较大的初始幅值差η0,以利于孤子的传输。
Abstract
The effect of adjacent solitons interaction on the transmission property of solitons is studied in the nonlinear optical communication dispersion compensation system by using variational method and virial theorem. The results show that, the two solitons attract each other and then repel with periodical collision law, and the bound state is formed, in the common single-mode fiber with phase matching and equal amplitude injection. But under the same condition, the solitons do not collide in dispersion compensation fiber. In dispersion compensation fiber, with phase mismatch and equal amplitude injection, the solitons leave each other; with phase matching and unequal amplitude injection, if the initial positional interval is small, a relatively large initial amplitude difference is necessary for the transmission of solitons.
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钟卫平, 易林. 色散补偿光纤通信系统中孤子之间的相互作用[J]. 光学学报, 2006, 26(4): 491. 钟卫平, 易林. Interactions of Solitons in Dispersion Compensation Fiber Nonlinear Communication System[J]. Acta Optica Sinica, 2006, 26(4): 491.

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