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Simultaneous 3R Regeneration of 4 \times 40-Gbit/s WDM Signals in a Single Fiber

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7 Author(s)
Wang, J. ; School of Electrical and Information Engineering, Tianjin University, Tianjin, China ; Yu, J. ; Meng, T. ; Miao, W.
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We experimentally demonstrate simultaneous 3R regeneration of 4 \times 40-Gbit/s WDM channels, which is based on the four-wave mixing (FWM) in a single dispersion-shifted fiber. The multichannel 3R regeneration performance is validated by bit-error rate (BER) measurements. Receiver powers at a BER of 10^{-9} are improved by 5.2 dB, 4.8 dB, 3.3 dB, and 3.9 dB for the four WDM channels, respectively. Mitigation of the interchannel nonlinearities is achieved mainly through an interchannel 0.5-bit slot time delay, which is introduced by differential group delay. Bidirectional propagation and polarization multiplexing are also applied to relieve the interchannel FWM.

Published in:

Photonics Journal, IEEE  (Volume:4 ,  Issue: 5 )