Practical Solutions for 400 Gbit/s Data Center Transmission
Annika Dochhan, Nicklas Eiselt, Jinlong Wei, Helmut Grießer, Michael Eiselt, Juan José Vegas Olmos, Idelfonso Tafur Monroy, Jörg-Peter Elbers · 2016
We review three solutions for low-cost data center interconnects with reaches of up to 80 km. Directly detected DMT, PAM4 and multi-band CAP are promising modulation schemes, enabling 400 Gbit/s by combining eight channels of 56 Gbit/s.