J4 ›› 2014, Vol. 31 ›› Issue (4): 507-512.

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Spatial solitons in Kerr dual-periodic PT-symmetric optical lattices

Lin Qiawu, Xie Qingwen, Luo Zhihua, Shi Zhiwei, Li Huagang   

  1. 1 Department of Physics, Guangdong university of Education, Guangzhou 510303, China; 2 School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Published:2014-07-28 Online:2014-07-30

Abstract: Spatial solitons were numerically studied in Kerr dual-periodic PT-symmetric optical lattices. The bandgap structures of this optical lattices are gained by using plane wave expansion method, and the phase transition point is gained at the same time. The existence and stability of the spatial solitons are numerically studied in this optical lattices. Numerical results showed that the stable range of the solitons located on different period waveguide is different.

Key words: Nonlinear optics; Kerr medium; Parity-time symmetric optical lattice; spatial soliton; stability

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