[1] Agrawal G P. Nonlinear Fiber Optics [M]. San diego, Calif.: Academic, 1995. Chap.2

[2] Molomed B A. Formation of a soliton in an inhomogeneous nonlinear wave guide [J]. Phys. Scrip., 1993, 47:797-799

[3] Hasegawa A et al. Reduction of collision-induced time jitters in dispersion-managed soliton transmission systems [J]. Opt. Lett., 1996, 12(1): 39-41

[4] Abdullaev F K, Baizakov B B. Disintegration of a soliton in a dispersion-managed optical communication line with random parameters [J]. Opt. Lett., 2000, 25(2): 93-95

[5] Anderson D. Variational approach to nonlinear pulse propagation in optical fibers [J]. Phys. Rev., 1983, A27(6):3135-3145