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

Ju Wang, Jinlong Yu, Tianhui Meng, Wang Miao, Bin Sun, Wenrui Wang, Enze Yang
2012 IEEE Photonics Journal  
We experimentally demonstrate simultaneous 3R regeneration of 4 Â 40-Gbit/s WDM channels, which is based on the four-wave mixing (FWM) in a single dispersionshifted fiber. The multichannel 3R regeneration performance is validated by bit-error rate (BER) measurements. Receiver powers at a BER of 10 À9 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
more » ... el 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.
doi:10.1109/jphot.2012.2215955 fatcat:2kqcid4e7bdelbbd2tvm2yvlji