[1] [1] Fleischer J W,Segev M,Efremidis N K,et al. Observation of two-dimensional discrete solitons in optically induced nonlinear photonic lattices [J].Nature,2003,422: 147.

[2] [2] Christodoulides D N,Joseph R I. Discrete self-focusing in nonlinear arrays of coupled waveguides [J].Opt. Lett.,1988,13: 794.

[3] [3] Lederer F,Darmanyan S,Kobyakov A. Spatial Solitons [M].Springer-Verlag,Berlin,2001.

[4] [4] Tang X Y,Lou S Y,Zhang Y. Localized excitations in(2+1)-dimensional systems [J].Phys. Rev. E,2002,66:046601.

[5] [5] Neshev D,Ostrovskaya E,Kivshar Y. Spatial solitons in optically induced gratings [J].Opt. Lett.;2003,28(9):710.

[6] [6] Govind P A. Nonlinear Fiber Optics(third Editon)[M].Academic Press,2005,Chap2.

[7] [7] Chen Shihua,Du Fang,Yi Lin. Timing jitter of femtosecond solitons in single-mode optical fiber: a perturbation model [J].Phys. Rev. E,2004,69: 046602.