Optical phase conjugation for time-domain undoing of dispersive self-phase-modulation effects.

We show that the temporal distortion and spectral broadening of a pulse generated by the combined effects of group-velocity dispersion and self-phase modulation is removed by reflection of a cw-pumped, broadband, unityreflecting Kerr-like optical phase conjugator followed by retraversal of the nonlinear medium. We also examinenumerically the effects of finite linear loss in the material, of nonunity conjugate reflectivity, and of finite conjugator thickness.