光子学报, 2012, 41 (3): 288, 网络出版: 2012-03-30   

负折射介质中孤波间相互作用

Research on Interactions Between Solitary Waves in Negative-index Materials
作者单位
山西大学 物理电子工程学院,太原030006
摘要
以描述负折射介质中超短脉冲传输的归一化非线性薛定谔方程为模型,采用对称分步傅里叶算法研究了负折射介质中亮、暗孤波间的相互作用.数值模拟发现:当孤波的初始频移为零时,亮孤波间的相互作用与常规介质中类似;当孤波的初始频移不为零时,其传输速度和相互作用明显受三阶色散和自陡峭效应的影响,主要表现为相互排斥.而负折射介质中暗孤波间的相互作用与常规介质中的相互作用类似,无论暗孤波是否存在初始频移,暗孤波间的相互作用在三阶色散和自陡峭的影响下都表现为相互排斥.结果表明,通过调节三阶色散和自陡峭系数可以在一定程度上抑制负折射介质中亮、暗孤波间的相互作用.该研究结果为负折射介质在未来高速通信中的应用提供了理论依据.
Abstract
Based on the higher-order nonlinear Schrdinger equation describing the propagation of ultrashort pulses in negative-index materials, the interactions of bright and dark solitary waves in negative-index materials are studied using symmetrical Split-step Fourier method, respectively. Lots of numerical results show that when initial frequency shift is zero, the interactions between bright solitary waves are similar to those of bright solitons in conventional materials; when initial frequency shift is nonzero, the transmission speed and interactions are influenced by the third-order dispersion and the self-steepening effects. While the interactions between dark solitary waves are similar to those of dark solitary waves in conventional materials behaving repulsion each other under the influence of the third-order dispersion and the self-steepening effects whether initial frequency shift is zero or not. The results show that the interactions of bright and dark solitary waves in negative-index materials may be suppressed to some extent. The obtained results provide a theoretical basis for the applications of negative-index materials in future high-speed communication.

陈诚, 董佳, 杨荣草. 负折射介质中孤波间相互作用[J]. 光子学报, 2012, 41(3): 288. CHEN Cheng, DONG Jia, YANG Rong-cao. Research on Interactions Between Solitary Waves in Negative-index Materials[J]. ACTA PHOTONICA SINICA, 2012, 41(3): 288.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!