[1] Aleves A B, MOloney J V. Effect of two-pboton absorption on bright spatial soliton switches [J]. OPt. Lett., 1992,17(21): 1488

[2] Kivshar Y S, Haelterman M, Emplit P et al. Gordon-Haus effect on dark solitons [J]. Opt. lett., 1994, 19(1): 19-21

[3] Yuri S, Kivshar. Vector dark solitons [J]. Opt. Lett., 1993, 18:337

[4] Emplit P et al. Picosecond stepsand dark pulses through nonliear single mode fibers [J]. Opt. Chmmun., 1987,62:374

[5] Zhao W et al. Opt. Lett., 1990, 15:405