Solitons in periodic optical structures with nonlinearity management

被引:0
作者
Liu, Hailan [1 ]
Wen, Shuangchun [1 ]
Li, Ying [1 ]
机构
[1] Hunan Univ, Sch Comp & Commun, Changsha 410082, Hunan, Peoples R China
来源
OPTOELETRONIC MATERIALS AND DEVICES, PTS 1 AND 2 | 2006年 / 6352卷
基金
高等学校博士学科点专项科研基金;
关键词
optical soliton; periodic optical structure; fiber Bragg grating; nonlinearity management; nonlinear coupled mode equations; nonlinear Schrodinger equation; extended Tanh-function expansion method;
D O I
10.1117/12.688609
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, we investigate the solitary wave propagation through the nonlinear periodic structure that consists of alternating layers of both positive and negative Kerr nonlinear coefficients along the propagation direction, in which the pulse dynamics is governed by the nonlinear coupled mode (NLCM) equations. Using the multiple scale analysis, the NLCM equations are reduced into the perturbed nonlinear Schrodinger (PNLS) type equation. which incorporates both the higher order dispersive effects and self-steepening effect. From the PNLS equation, dark solitary solutions have been constructed by an extended Tanh-function expansion method. The effects of the physical parameters for nonlinear periodic structure on soliton propagation are discussed.
引用
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页数:7
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