Spatial Solitons in 2D Graded-Index Waveguides with Different Distributed Transverse Diffractions  

作　　者：陈翼翔 

机构地区：[1]School of Electronics Information, Zhejiang University of Media and Communications

出　　处：《Communications in Theoretical Physics》2014年第2期214-220,共7页理论物理通讯（英文版）

基　　金：Supported by the Higher School Visiting Scholar Development Project under Grant No.FX2013103;the Research Fund under Grant No.ZCI2XJY003; Research Fund for the Doctoral Program under Grant No.Z301B13519 of the Zhejiang University of Media and Communications;Zhejiang Province Science Foundation for Youths under Grant No.LQ12F05005;National Natural Science Foundation of China under Grant No.11374254

摘　　要：We discuss the nonlinear Schr6dinger equation with variable coefficients in 21） graded-index waveguides with different distributed transverse diffractions and obtain exact bright and dark soliton solutions. Based on these solutions, we mainly investigate the dynamical behaviors of solitons in three different diffraction decreasing waveguides with the hyperbolic, Gaussian and Logarithmic profiles. Results indicate that for the same parameters, the amplitude of bright solitons in the Logarithmic profile and the amplitude of dark solitons in the Gaussian profile are biggest respectively, and the amplitude in the hyperbolic profile is smallest, while the width of solitons has the opposite case.

关 键 词：nonlinear Schr6dinger equation bright solitons dark solitons diffraction decreasing waveguides 

分 类 号：O437[机械工程—光学工程]