Recent progress in investigating optical rogue waves

Some of the latest advancements in investigating optical rogue waves are discussed. This subject has been rapidly expanding from 2007 with many published works in different fields: supercontinuum generation in a fiber, nonlinear waves in optical cavities, pulsed operation of passively mode-locked lasers, and wave propagation in photonic crystal fibers. Rogue waves have been found in erbium-doped fiber systems, Raman fiber amplifiers, and as spatiotemporal structures in parametric processes when analyzing phase profiles. A number of theories for optical rogue wave formation have been advanced for different experimental conditions. These advancements demonstrate that rogue waves can arise through soliton collisions under other experimental conditions, which can produce events with high red-shifted energy.