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Issue:
Nonlocal dark soliton and its linear stability analysis
Author(s):
Gao Xing-Hui 1)2) Zhang Cheng-Yun 1) Tang Dong 1) Zheng Hui 1) Lu Da-Quan 2) Hu Wei 2) 1) 2)
Pages:
236
-
240
Year:
2013
Issue:
4
Journal:
Acta Physica Sinica
Keyword:
非局域
;
稳定性
;
暗孤子
;
Abstract:
由于其在通信领域潜在的应用前景,非局域空间孤子一直是研究热点.但空间非局域暗孤子由于其边界的特殊性,对其特别是稳定性方面研究甚少.提出了非局域暗孤子稳定性分析理论,并对热非线性体介质中1+1维基态和二阶暗孤子的稳定性进行了数值分析和研究,得到了稳定性图.从稳定性分析图可知:在热非线性体介质中,1+1维基态暗孤子在其存在区域总是稳定的,而1+1维二阶暗孤子是震荡不稳定的,其不稳定区域的宽度与传播常数以及介质的非局域程度有关.为了验证非局域暗孤子稳定性分析理论的正确性,对加噪声初始输入的传输进行数值模拟得到了传输图,传输图表明稳定性分析理论的正确性.
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