摘要
在色散管理孤子系统中引进初始啁啾这种扰动,根据非线性薛定谔(NLS)方程,利用对称分步傅立叶法对带初始啁啾光孤子在光纤中的传输情况进行了研究。结果表明,初始啁啾加强了光孤子间的相互作用,当啁啾达到一定程度时,孤子之间的作用变的相当剧烈,使得孤子发生严重形变,甚至导致孤子崩塌,这将对光孤子通信系统造成严重影响,而色散管理光纤系统可以有效地降低这些影响。
By importing solitons with initial chirp to the fiber communication system, the evolution properties of the solitons transmitting in the fiber are studied via solving the nonlinear Schrodinger （NLS） equation by making use of symmetrical slit-step Fourier numerical method. It is shown that the interaction of the solitons with initial chirp is increased when they transmitting in conventional fiber systems. When the chirp great to a certain extent, the interaction of optical solitons become so intensively that may cause the solitons dilapidation, which will bring badly influence on the soliton communications. While the solitons transmitting in the dispersion management fiber system, these negative influence can be decreased effectively.
出处
《重庆邮电大学学报（自然科学版）》
2008年第1期86-89,共4页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
重庆市科委自然科学基金资助项目(CSTC
2006BB2361)
关键词
色散管理
初始啁啾
光孤子
分步傅立叶法
dispersion management
initial chirp
optical soliton
symmetrical slit-step Fourier numerical method
