Dispersive wave generation in photonic crystal fibers with normal dispersion pumping

We present a comprehensive numerical and experimental investigation of dispersive wave emission in photonic crystal fibers, generated from femtosecond pulses under normal dispersion pumping. Particular attention is given to the roles of self-phase modulation and optical wave breaking in shaping both the temporal and spectral characteristics of the pulses in the presence of higher-order dispersion. Our findings underscore the critical importance of accounting for higher-order dispersion to accurately model the dynamics of optical wave breaking and dispersive wave generation in the anomalous dispersion regime. Experimentally, our results show excellent agreement with numerical simulations, further validating the model. Additionally, we examine polarization effects and supercontinuum relative intensity noise using the dispersive Fourier transform technique.