Novel phenomenon of pulse trapping by ultrashort soliton pulse across zero-dispersion wavelength

Summary form only given. The characteristics of pulse trapping are analyzed both experimentally and numerically. The spectrogram of the trapped pulse and soliton pulse is observed using the crosscorrelation frequency resolved optical gating (X-FROG) technique. The fundamental characteristics of the pulse trapping are analyzed numerically using simultaneous nonlinear Schrodinger equations. In the experiment, the soliton pulse is coupled into polarization maintaining highly nonlinear dispersion shifted fiber (PM-HN-DSF) slightly before signal pulse. The numerical results are well in agreement with the experimental ones. It is considered that the effects of cross-phase modulation and soliton self-frequency shift (SSFS) are the key factors of pulse trapping.