Multipeaked gap solitons in PT-symmetric optical lattices
Multipeaked gap solitons in PT-symmetric optical lattices
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DOI：
10.1364/ol.37.004543
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发表时间：
2012-11-01
期刊：
影响因子：
3.6
通讯作者：
Dong, Liangwei
中科院分区：
文献类型：
--
作者：
Li, Chunyan;Huang, Changming;Dong, Liangwei
本文研究了具有宇称-时间（PT）对称性的压印复合光晶格的离焦克尔介质中多峰孤子的存在性和稳定性。在晶格的第一个有限间隙中发现了具有不同峰数的各种孤子解族。线性稳定性分析证实了直接传播模拟表明，多峰间隙孤子可以在很宽的范围内稳定传播，只要他们的传播常数超过一个临界值。我们的研究结果表明，第一次，在PT对称晶格中存在稳定的多峰间隙孤子。(C)2012美国光学学会
We report the existence and stability properties of multipeaked solitons in a defocusing Kerr medium with an imprinted complex optical lattice featuring a parity-time (PT) symmetry. Various families of soliton solutions with a different number of peaks are found in the first finite gap of the lattice. Linear stability analysis corroborated by direct propagation simulations reveals that multipeaked gap solitons can propagate stably in a wide range, provided that their propagation constant exceeds a critical value. Our findings demonstrate, for the first time, the existence of stable multipeaked gap solitons in a PT-symmetric lattice. (C) 2012 Optical Society of America