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A Novel Design for Polarization-Independent Single-Pump Fiber-Optic Parametric Amplifiers

We propose a novel scheme for designing fiber-optic parametric amplifiers whose operation does not depend on the input signal polarization. In our scheme, four-wave mixing takes place inside a birefringent fiber pumped at 45deg from a principal axis. We show numerically that output power varies by <0.1 dB for arbitrary states of input polarization under practical conditions