We demonstrate reduction of four-wave mixing crosstalk using hybrid optical parametric amplifier with erbium-doped fiber amplifier. Crosstalk reduction of more than 13 dB has been achieved while providing 20-dB gain. Noise figures of different amplifier configurations are compared. Bit error rate measurements confirm the hybrid configuration introduces < 0.5 dB and < 1.5 dB power penalties in signal and idler wavelength, respectively, compared with a pure optical parametric amplifier.
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Lei et al. (2013) studied this question.
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