O-band DWDM is moving from a niche idea to a practical answer for modern data center interconnect. As AI clusters expand, cloud platforms spread across campuses, and metro edge nodes demand faster east-west traffic exchange, the 10–30 km DCI segment has become a real design challenge. It sits beyond the comfort zone of simple intra-data-center… Continue reading O-band DWDM: Rebuilding the Last Mile of DCI with Lower Cost and Simpler 400G Interconnect