Nvidia Bets $6.5 Billion on Photonics to Break AI’s Energy Bottleneck
Nvidia has quietly assembled a photonics investment portfolio worth at least $6.5 billion since early March, CNBC reported Friday, as the chipmaker moves to solve one of artificial intelligence’s most pressing infrastructure constraints.
Nvidia’s Photonics Investment Push
Photonics uses pulses of light rather than electrical signals to move data. The technology is widely viewed as far more energy-efficient than conventional copper-based transmission. That efficiency gap is becoming critical as AI workloads grow and power demand at data centers intensifies.
Nvidia announced $2 billion stakes each in Lumentum, Coherent, and Marvell, all active in photonics development. A separate $500 million commitment went to glassmaker Corning for advanced optical connectivity work. Nvidia also joined a $500 million Series E round in optics startup Ayer Labs alongside chipmaker AMD.
Forrester senior analyst Alvin Nguyen told CNBC that the move lets Nvidia scale AI infrastructure without the mounting energy costs tied to electrical and copper systems. Without this shift, he said, the company risks hitting a hard scalability ceiling.
Why Copper Is Running Out of Road
Copper remains the dominant connectivity standard today. It is cheaper and highly reliable. But Morningstar senior equity analyst Brian Colello told CNBC that optical connectivity will grow significantly as next-generation AI rack-scale systems demand exponentially higher bandwidth.
Nvidia has already begun integrating photonics into its networking solutions. CEO Jensen Huang said at the company’s GTC conference in March that Nvidia is adding photonics to its GPU-to-GPU interconnect technology. He noted that required silicon photonics capacity already exceeds what the global supply chain currently produces.
The Broader Race and Its Challenges
Nvidia is not alone. AMD participated in the Ayer Labs round and acquired photonics startup Enosemi in 2025. Alphabet and Microsoft venture units backed optical startup nEye in an $80 million Series C round in April.
Markets have responded sharply. Lumentum shares have climbed roughly 134% year-to-date. Coherent is up around 96%, Marvell has surged approximately 122%, and Corning has gained about 111%.
Still, scaling photonics across an entire AI infrastructure stack remains a manufacturing challenge. Analysts note the underlying technology is proven, but production at the volumes AI demands is a separate and harder problem to solve.
Read Next: Jensen Huang Says the Age of the AI Factory Has Arrived
