Polarisation-insensitive wavelength conversion andphase conjugation using bi-directional forward four-wave mixing in a lasingDFB-LD

Abstract
A polarisation-insensitive wavelength converter is proposed using bi-directional nondegenerate forward four-wave mixing in a lasing DFB-LD in which the lasing beams are used as pump waves. The converter suppresses the polarisation sensitivity of conversion efficiency to within 0.4 dB, and demonstrates a 10 Gbit/s wavelength conversion and optical phase conjugation.