Stabilization of optical solitons in chirped PT-symmetric lattices

We investigate the stability properties of optical solitons in a chirped PT-symmetric lattice whose frequency changes in the transverse direction. Linear-stability analysis together with the direct propagation simulations demonstrates that the chirped lattice can improve the stability of optical sol...

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Bibliographic Details
Published in中国物理B：英文版 no. 7; pp. 232 - 236
Main Author 李春艳 黄长明 董亮伟
Format Journal Article
LanguageEnglish
Published 01.07.2013
Subjects
不稳定
光孤子
啁啾
对称
晶格能
稳定性能
线性稳定性分析
频率变化
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/22/7/074209

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Summary:We investigate the stability properties of optical solitons in a chirped PT-symmetric lattice whose frequency changes in the transverse direction. Linear-stability analysis together with the direct propagation simulations demonstrates that the chirped lattice can improve the stability of optical solitons dramatically. The instability of fundamental solitons can be completely suppressed if the chirp rate exceeds a critical value. A broad stability area of dipole solitons appears if the lattice is appropriately chirped. Thus, we propose an effective way to suppress the instability of solitons in PT-symmetric potentials.
Bibliography:stability;chirp rate;PT-symmetric lattices
We investigate the stability properties of optical solitons in a chirped PT-symmetric lattice whose frequency changes in the transverse direction. Linear-stability analysis together with the direct propagation simulations demonstrates that the chirped lattice can improve the stability of optical solitons dramatically. The instability of fundamental solitons can be completely suppressed if the chirp rate exceeds a critical value. A broad stability area of dipole solitons appears if the lattice is appropriately chirped. Thus, we propose an effective way to suppress the instability of solitons in PT-symmetric potentials.
11-5639/O4
Li Chun-Yan, Huang Chang-Ming, and Dong Liang-Wei a） Department of Physics, Zhejiang Normal University, Jinhua 321004, China b） Institute of Information Optics, Zhejiang Normal University, Jinhua 321004, China
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/22/7/074209