Stabilization of multibeam necklace solitons in circular arrays with spatially modulated nonlinearity
Stabilization of multibeam necklace solitons in circular arrays with spatially modulated nonlinearity
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DOI：
10.1103/physreva.80.053816
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发表时间：
2009-10
影响因子：
2.9
通讯作者：
Y. Kartashov;B. Malomed;V. Vysloukh;L. Torner
中科院分区：
文献类型：
--
作者：
Y. Kartashov;B. Malomed;V. Vysloukh;L. Torner
研究了非线性和线性折射率异相调制的圆波导阵列支持的项链孤子。这样的二维项链孤子表现为多个异相亮斑的环。我们发现，项链孤子是稳定的，如果他们的峰值强度是低或中等，稳定的域随着非线性调制深度的增加而缩小。然而，我们发现，稳定域扩大与项链点的数量增加。
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.