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Narrow-linewidth idler generation in fiber four-wave mixing and parametric amplification by dithering two pumps in opposition of phase

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4 Author(s)
Min-Chen Ho ; Dept. of Electr. Eng., Stanford Univ., CA, USA ; Marhic, M.E. ; Wong, K.Y.K. ; Kazovsky, Leonid G.

Wide-bandwidth and high-gain fiber optical parametric amplifiers (OPAs) have been demonstrated recently. Their application as all-optical wavelength converters has been hampered by pump-induced converted-signal spectrum broadening, due to the required pump phase modulation. In this paper, we theoretically investigate and experimentally demonstrate a technique to cancel the converted-signal broadening by using four-wave mixing (FWM) or parametric amplification with two pumps phase-modulated 180° out of phase. The resulting converted-signal quality is comparable to that of the output signal

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Lightwave Technology, Journal of  (Volume:20 ,  Issue: 3 )