Generation and coherence of the supercontinuum (SC) in all-normal dispersion photonic crystal fiber are numerically and experimentally investigated. Different pumping pulses are used in the investigation. In the case of high power short pulse, self-phase modulation plays a crucial role in the SC generation. Spectra are symmetrically spreading at both sides of the pump wavelength, and the SC is highly coherent. When the width of the pump pulse is as large as 600 ps, stimulated Raman scattering is the main nonlinear effect, so supercontinuum is transfered towards the longer wavelengths with respect to pumping wavelength.