Localization in frequency for periodically kicked light propagation in a dispersive single-mode fiber

We show a special effect of localization in the temporal frequency domain o f light pulses that propagate in a dispersive single-mode fiber in the pres ence of a time-periodic phase modulation that is repeatedly applied at equa lly spaced locations along the fiber. The effect is analogous to the dynami cal localization that occurs for the quantum kicked rotor, which is similar to Anderson localization in disordered solids. The wave behavior eliminate s the diffusive spread of sidebands (harmonics). The light propagation, whi ch is described by a Schrodinger-like propagation equation, can provide a n ew testing ground for the investigation of localization besides shedding li ght on technologically important pulse propagation in fibers and mode-locke d lasers. (C) 1999 Optical Society of America.