Giant dispersive wave generation through soliton collision

We numerically study long pulse supercontinuum generation in a photonic crystal fiber with two zero-dispersion wavelengths, reporting a dynamical effect where soliton collisions excite dispersive waves with 1 order of magnitude greater peak power than that arising from single-soliton generation. The dispersive wave peak power exhibits extreme-value "rogue" characteristics, with the long tail of the distribution populated by collision-related events.