Silicon Photonics

Silicon photonics is a chip technology that moves data using light instead of electrical signals, delivering higher bandwidth and lower power use than traditional copper interconnects. As AI clusters scale to link thousands of GPUs, silicon photonics has become central to next-generation data center networking and chip-to-chip communication. This hub covers the companies and research pushing optical interconnects into AI infrastructure.

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Artist's rendering of a silicon nanophotonic chip guiding laser light through waveguides and resonant rings

What Is Silicon Photonics — and Why Does AI Depend on It?

7 August 2026

Silicon photonics moves data with pulses of light instead of electricity, letting AI chips exchange far more data using far less power as GPU clusters scale to hundreds of thousands of chips.

GlobalFoundries Wins $300M US Grant for AI Chip Photonics

30 July 2026

The U.S. Commerce Department is giving GlobalFoundries up to $300 million to build optical links for AI chips, part of an $874 million CHIPS push across seven firms.