Rogue events are statistically rare but carry a huge impact. Occurring in everyday contexts such as finance, network traffic, ocean waves and elsewhere. Launching intense pulses into silicon waveguides results in supercontinuum generation, strong nonlinear optical broadening due to a host of complex interactions. This complex mixing of frequencies occasionally results in especially strong broadening, yielding heavy-tailed distribution from what was once Gaussian noise. By stimulating the initial conditions with a well-chosen seed, the broadening can be controlled and stabilized.