Self-focusing and defocusing in waveguide arrays

被引：190

作者：

Morandotti, R ^{[1
]}

Eisenberg, HS

Silberberg, Y

Sorel, M

Aitchison, JS

机构：

[1] Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel

[2] Univ Glasgow, Dept Elect & Elect Engn, Glasgow G12 8QQ, Lanark, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.86.3296

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that two regimes of diffraction exist in arrays of waveguides, depending upon the input conditions. At higher powers, normal diffraction leads to self-focusing and to the formation of bright solitons through the nonlinear Kerr effect. By slightly changing the input conditions, light experiences anomalous diffraction and is nonlinearly defocused. For the first time, self-focusing and self-defocusing have been achieved for the same medium, structure, and wavelength.

引用

页码：3296 / 3299

页数：4

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