Four-Wave Mixing in Nonlinear Fiber With Two Intracavity Frequency-Shifted Laser Pumps

We experimentally study Bragg-type four-wave mixing frequency conversion in highly nonlinear fibers by using two independent frequency-shifted-feedback lasers. We obtain frequency conversion with partial coherent pumps when both lasers operate in the continuous-wave regime. Our experimental results compare well with numerical simulations, which take into account partial coherence of the two pumps.