Coherent Optics Push Toward 800G and Beyond
Optical networking vendors are advancing coherent transmission technology toward 800 gigabit and 1.6 terabit per wavelength capacity, driven by hyperscale operators demanding ever-higher bandwidth density per fiber pair to support AI training cluster interconnect requirements. This capacity escalation reflects the reality that a single AI training cluster now generates traffic volume that would have overwhelmed entire regional networks just a few years ago. Several leading vendors have disclosed 1.6 terabit coherent transponder product roadmaps targeting commercial availability within the next two years, a timeline that will further widen the capacity gap versus legacy transmission equipment.
Market Impact: Hyperscale optical spend up 38% yearly








