Stabilization of multibeam necklace solitons in circular arrays with spatially modulated nonlinearity

被引：31
|
作者：
Kartashov, Yaroslav V. [1 ,2 ]
Malomed, Boris A. [3 ]
Vysloukh, Victor A. [1 ,2 ]
Torner, Lluis [1 ,2 ]
机构：
[1] ICFO Inst Ciencies Foton, Barcelona 08860, Spain
[2] Univ Politecn Cataluna, Barcelona 08860, Spain
[3] Tel Aviv Univ, Fac Engn, Sch Elect Engn, Dept Phys Elect, IL-69978 Tel Aviv, Israel
来源：
PHYSICAL REVIEW A | 2009年 / 80卷 / 05期
关键词：
optical arrays; optical modulation; optical solitons; optical waveguides; phase modulation; refractive index; OPTICAL LATTICES; STABILITY; BEAMS;
D O I：
10.1103/PhysRevA.80.053816
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We consider necklace solitons supported by circular waveguide arrays with out-of-phase modulation of nonlinearity and linear refractive index. Such two-dimensional necklace solitons appear as rings of multiple out-of-phase bright spots. We show that necklace solitons are stable if their peak intensity is low or moderate and that the domain of stability shrinks with increasing nonlinearity modulation depth. However, we find that the stability domains expand with increasing number of necklace spots.
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页数：4
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