Fig. 1. Waveform of Gaussian pulse after modulation by nonlinear effect, when z=10 km, γ=2 km^-1·W^-1, s=0.014 fs^-1, and T_R=0.3 fs^-1. (a) Raman coefficient; (b) self-steepness coefficient; (c) connection diagram of spectral peak points in Fig. (a); (d) connection diagram of spectral peak points in Fig. (b); (e) pulse time domain envelope; (f) spectrum diagram

Fig. 2. Waveform of Gaussian pulse after adding group velocity dispersion, when Z=3.3 and β₂=0.1. (a) Normal dispersion region, different transmission distance, (b) abnormal dispersion region, different transmission distance; (c) time domain envelope diagram of positive pulse; (d) time domain envelope diagram of inverse pulse

Fig. 3. Comparison of envelope of chirped Airy pulse and liked chirped Airy pulse, when a=0.05,C=-1.55. (a) Time domain envelope diagram of chirped Airy pulse under different truncation coefficients; (b) frequency spectrum of chirped Airy pulse under different chirp values; (c) pulse time domain envelope diagram; (d) spectrum diagram

Fig. 4. Time domain diagram of different pulses transmitted in different regions, when |β₂|=T02, a=0.05, and C=-1.5. Chirped Airy pulse, (a) anomalous dispersion region and (b) normal dispersion region; positive pulse, (c) normal dispersion region and (d) anomalous dispersion region; inverse pulse, (e) anomalous dispersion region and (f) normal dispersion region