A. Dochhan, Nicklas Eiselt, Jinlong Wei, H. Griesser, M. Eiselt, J. Olmos, I. Monroy, J. Elbers
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Practical Solutions for 400 Gbit/s Data Center Transmission
We review three solutions for low-cost data center interconnects with a target reach of up to 80 km. Directly detected DMT, PAM-4 and multi-band CAP are promising modulation schemes, enabling 400 Gbit/s by combining eight channels of 56 Gbit/s.