All-optical tunable pulse frequency chirp via slow light.
We theoretically investigate slow light via stimulated Raman scattering, paying special attention to the picosecond regime where chromatic dispersion and cross-phase modulation must be considered. In addition to the control of the Raman pulse walk-off, we demonstrate that the cross-phase-modulation-induced frequency chirp can also be all-optically tuned via Raman slow light. We further demonstrate that this new implication is a consequence of the fact that the group velocity is significantly more affected than the phase velocity in slow-light media.
Fanjoux
Gil
G
Institut FEMTO-ST, Département d'Optique P. M. Duffieux, Université de Franche-Comté,CNRS UMR 6174, Besançon, France. gil.fanjoux@univ-fcomte.fr
Sylvestre
Thibaut
T