C. Yu, T. Luo, B. Zhang, Z. Pan, M. Adler, Y. Wang, J.E. McGeeban, A. Willner
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3R regeneration of a 40-Gbit/s optical signal by optical parametric amplification in a highly-nonlinear fiber
We demonstrate wavelength-shift-free 3R-regeneration of 40-Gbit/s optical RZ signal by OPA with a clock-modulated pump in highly-nonlinear fiber. The power penalty is improved by 2.6 dB, and the signal power is amplified by 7 dB.