A. Anchal and P. K. Krishnamurthy, "Phase conjugation without frequency shift using dual pumped bidirectional FWM in optical fibers,"
in 12th International Conference on Fiber Optics and Photonics,
OSA Technical Digest (online)
(Optical Society of America, 2014), paper S5A.40.
We describe a novel method of polarization and frequency-shift free optical phase conjugation in fibers. Theoretical analysis based on NLSE and simulations show perfect phase conjugation and spectral inversion.