Phase-matched four-photon mixing processes in birefringent fibers
We describe several new phase-matching processes for four-photon mixing in polarization-preserving birefringent fibers. The frequency shifts and polarization conditions of the waves involved in this nonlinear interaction are specified for a single-mode fused silica birefringent fiber. Our calculations include the effect of dispersion in the birefringence of the fibers.
PACS42.65.Cq 42.80.Mv 42.65.-k
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