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OFC 2026 – Scaling AI Clusters: How Scale-Up and Scale-Out Optical Architectures Are Evolving – OpenAI / AMD / NVIDIA / Broadcom / TeraHop / Coherent
With 512K-GPU clusters becoming the norm for AI factories, copper is hitting its limits. An OFC 2026 panel showed how CPO delivers a 3.5X efficiency gain, and how the 12.8T XPO rewrites the switch-density game.
2 days ago
ECOC 2026 | 4.7 pJ/bit and 2031: Coherent Moves CPO from Slides to the Lab Bench — and Pins the Crossover Six Years Out
At ECOC 2026, Coherent skipped the CPO sales pitch and brought a working machine: a 6.4T NPO with its own ELSFP at 4.7 pJ/bit — laser included. LightCounting puts the crossover at 2031. The CPO debate is over; what remains is a fight over the slope.
2 days ago
Articles: Blog2
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