Engineering Research Center for Optoelectronics of Guangdong Province, School of Science, South China University of Technology, Guangzhou, China.
Opt Lett. 2013 Aug 1;38(15):2723-5. doi: 10.1364/OL.38.002723.
We report on the existence and stability of the two-dimensional multipeak gap solitons in a parity-time-symmetric periodic potential with defocusing Kerr nonlinearity. We investigate the multipeak solitons with all the peaks of the real parts in-phase. It is found that these solitons can be stable in the first gap. The system can support not only the stable solitons with even number peaks, but also the stable solitons with odd number peaks. The transverse energy flow vector of these solitons is also studied.
我们报告了在具有散焦克尔非线性的宇称时间对称周期势中二维多峰隙孤子的存在和稳定性。我们研究了所有实部峰值同相的多峰孤子。结果发现，这些孤子可以在第一个隙中稳定存在。该系统不仅可以支持偶数峰值的稳定孤子，也可以支持奇数峰值的稳定孤子。我们还研究了这些孤子的横向能量流矢量。
