Nvidia alone has committed more than $6.5 billion to photonics companies since March 2026. That figure includes $2 billion investments in both Lumentum and Coherent, up to $3.2 billion in Corning, and a $500 million Series E round in Ayar Labs.

Silicon photonics uses light instead of electrical signals to move data across silicon chips and between servers. Copper interconnects worked fine when AI models were smaller and data centers were more modest. But modern training clusters push hundreds of thousands of GPUs to work in concert, and the bandwidth demands have simply outrun what electrical signaling can deliver without melting or consuming absurd amounts of power.

The market numbers tell the story clearly. Silicon photonics was roughly a $2.2 billion sector in the 2024-2025 timeframe. Projections now place it at over $9.6 billion by 2030, representing a compound annual growth rate between 28% and 29.5%.

Stock performance in the sector has been eye-catching. Applied Optoelectronics has gained 328% year-to-date in 2026. Lumentum is up 137%. Ciena has climbed 113%. These gains are driven by actual purchase orders from hyperscale data center operators.

The research notes no direct mention of cryptocurrency tokens or blockchain protocols within this trend. However, silicon photonics supplies the infrastructure for AI workloads, hinting at possible indirect relevance to crypto projects striving for decentralized or on-chain AI processing capabilities that depend on efficient high-performance networking.