Effect of depolarization on conjugation (inversion) quality in stimulated scattering in optical fibers
Zel'dovich B. Ya., Krivoshchekov V. A., Mamaev A. V., Mel'nikov N. A., Pilipetskii N. F., Shkunov V. V.
In long optical fibers, the primary cause of a low quality of phase conjugation (wave-front inversion) in stimulated scattering is a spatial depolarization of the pump light in the fiber. The condition for suppressing polarization distortion of the inversion is the condition for a high stimulated-scattering gain for the Stokes wave over the pump depolarization length.