[1] [1] ZHANG Q F, GAO J. Generation of excellent self-similar pulses in a dispersion-decreasing fiber[J]. Optik, 2011, 122(19): 1753-1756.

[2] [2] AGRAWAL G. Nonlinear fiber optics[M]. 4th ed. New York: Elsevier, 2013: 47-56.

[3] [3] ALI R, HAMZA M Y. Propagation behavior of super-Gaussian pulse in dispersive and nonlinear regimes of optical communication systems[C]// 2016 International Conference on Emerging Technologies (ICET) 2017. New York,USA: IEEE, 2016: 1109-1121.

[4] [4] SUNAK H R D. Optical fiber communications[J]. Proceedings of the IEEE, 2008, 1985: 13332.

[5] [5] HIROOKA T, NAKAZAWA M. Parabolic pulse generation by use of a dispersion-decreasing fiber with normal group-velocity dispersion[J]. Optics Letters, 2004, 29(5): 498-500.

[6] [6] XU Y H, YE H, LING D, et al. Effect of initial chirp on supercontinuum generation in dispersion decreasing fibers[J]. Optik, 2016, 127(3): 1111-1115.

[7] [7] ZHONG X, LIU D, SHENG J. Long-term nonlinear propagation and damped oscillation behaviors of Gaussian and super-Gaussian pulses in optical fibers[J]. Optik, 2016, 127(16): 6395-6399.

[8] [8] ZHANG Q F, DENG Y H. Influence of gain coefficient on the self-similar pulses propagation in a dispersion-decreasing fiber[J]. Optik, 2016, 127(12): 5110-5112.

[9] [9] ZHONG D Zh, DENG T, ZOU F Y. Research on super-Gaussian pulse transmission characteristics in single-mode fiber[J]. Optical Communication Research, 2007, 33(2):22-25.

[10] [10] WANG Y, LI Y Q. Study on the characteristics of super-Gaussian pulse without initial chirp in single-mode fiber[J]. Optical Communication Research, 2015, 41(1):17-19.

[11] [11] LIU J H, LI H Q. Study on the broadening of chirped Gaussian pulse in DDF[J]. Optical Communication Research, 2008, 34(2):41-43.

[12] [12] LIU J H, LI H Q, et al. Study on pulse broadening in dispersion decreasing fiber[J]. Optical Communication Research, 2007(s1):341-342.

[13] [13] ZHANG J G, LI Y F, ZHAO J Q. Analysis of ultra-short optical pulse transmission characteristics based on short-time Fourier transform[J]. Laser Technology, 2013, 37(1):52-55(in Chinese).