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We propose a simple method to realize multi-channel grooming exchange using the degenerate FWM in a highly nonlinear fiber (HNLF). Optical phase-transparent data exchange of four-channel 100-Gbit/s RZ-DQPSK signals is demonstrated with a penalty <;4.7dB.
We report phase-transparent DQPSK data exchange using parametric depletion in a highly nonlinear fiber. 100-Gbit/s DQPSK data exchange is demonstrated with a power penalty less than 5dB. Pump misalignment tolerance (+/-2ps) and input signal power dynamic range (~20dB) are investigated.
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