ENVELOPE SOLITON AS AN INTRINSIC LOCALIZED MODE IN A ONE-DIMENSIONAL NONLINEAR LATTICE

被引：103

作者：

YOSHIMURA, K ^{[1
]}

WATANABE, S ^{[1
]}

机构：

[1] YOKOHAMA NATL UNIV,FAC ENGN,DEPT ENERGY ENGN,HODOGAYA KU,YOKOHAMA,KANAGAWA 240,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 01期

关键词：

D O I：

10.1143/JPSJ.60.82

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An envelope soliton in a nonlinear lattice has been studied theoretically and numerically. First, the nonlinear Schrodinger equation describing a lattice wave with large wave number is derived and then the equation of motion for the nonlinear lattice is solved numerically taking the one envelope soliton solution of the nonlinear Schrodinger equation as an initial wave. It is shown that the envelope soliton with zero group velocity exists stably in the lattice and that the frequency of carrier wave is above the cut-off frequency of the lattice. An intrinsic localized mode in the nonlinear lattice developed by Takeno is pointed out to be the envelope soliton with zero group velocity.

引用

页码：82 / 87

页数：6

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