Gray solitons in parity-time symmetric potentials

被引：59

作者：

Li, Huagang ^{[2
]}

Shi, Zhiwei ^{[1
]}

Jiang, Xiujuan ^{[1
]}

Zhu, Xing ^{[3
]}

机构：

[1] Guangdong Univ Technol, Sch Informat Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Univ Educ, Dept Phys, Guangzhou 510303, Guangdong, Peoples R China

[3] S China Univ Technol, Sch Sci, Guangdong Engn Res Ctr Semicond Lighting, Guangzhou 510640, Peoples R China

来源：

OPTICS LETTERS | 2011年 / 36卷 / 16期

基金：

中国国家自然科学基金;

关键词：

NONLOCAL NONLINEAR MEDIA; SPATIAL SOLITONS; DARK SOLITONS; OPTICS;

D O I：

10.1364/OL.36.003290

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We numerically study the gray solitons in parity-time (PT) symmetric potentials. Simulated results show that there are two kinds of gray solitons, the dip-shaped gray solitons and the hump-shaped solitons, and both of them can be stable. Hump-shaped solitons can always exist, but the grayness of a stable dip-shaped gray soliton should exceed a threshold value. More interesting, it is discovered that when propagating in PT symmetric potentials, the gray solitons have no transverse deviation, and this is a phenomenon different from the usual gray solitons. (C) 2011 Optical Society of America

引用

页码：3290 / 3292

页数：3

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