STMicro's Silicon Photonics Hits Mass Production: What 800G/1.6T Co-Packaged Optics Mean for Network Engineers

STMicroelectronics just entered high-volume production of its PIC100 silicon photonics platform — the manufacturing technology behind the 800G and 1.6T optical modules going into every major AI data center buildout. For network engineers, this is the plumbing layer beneath your VXLAN EVPN overlays and BGP fabrics, and understanding it is becoming essential as data centers push past 400G. Key Takeaway: Silicon photonics and co-packaged optics are the technologies enabling AI data center fabrics to scale to 800G/1.6T per link while cutting power consumption by up to 70% — and network engineers who understand the optical layer will design better fabrics and troubleshoot faster. ...

March 9, 2026 · 8:00 AM MST · Data Center