All-Optical Regeneration in One- and Two-Pump Parametric Amplifiers Using Highly Nonlinear Optical Fiber

We describe the operation of a two-pump parametric optical regenerator. It is shown that higher-order parametric coupling provides optical regeneration with a high extinction ratio. Excessive spectral broadening is studied in a two-pump architecture and compared with that of the one-pump parametric regenerator. We show that the spectral widths of the higher-order terms can be controlled in amplifiers by using counterphased optical pumps.