Abstract

Polarization characteristics of a SBS phase conjugation in multimode fibers with different core sizes and fiber lengths are investigated experimentally. A degree of polarization (DOP) of the Stokes wave becomes better as a fiber becomes shorter and is recovered more than 95% in 0.5 m fibers with different core size. The averaged DOP keeps more than 90% even in fibers with 200 m length. A direction of a linear polarization of the SBS phase conjugation coincides with that of an incident light, independent of the fiber length and thickness.

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