Lumentum to demonstrate PCIe-over-optics with support from Corning, Astera Labs - Telecompaper

This is not a product launch—it is a fracture point in data center interconnect architecture. PCIe 6.0 has hit the Nyquist ceiling on copper, making optical interconnect a physical necessity. The Lumentum-Corning-Astera Labs triad is rewiring the physical layer: co-integrating optical engines, ultra-low-loss fiber, and the PCIe protocol stack at the chip level. Server backplanes and CPU-GPU links will be redesigned from the ground up. Broadcom's PCIe switch portfolio must adopt optical interfaces within 18 months or face structural market erosion. Optical DSP and TIA packaging capacity remains concentrated in Taiwan, China and mainland China, while roughly 60% of global preform production sits in mainland China. If Washington extends export controls to optical interconnect chips, Astera Labs' lead times could stretch from 12 to 26 weeks, directly threatening its 2025-2026 revenue guidance. Broadcom's likely counter: accelerating CPO with in-house optical engines. Marvell will embed optical SerDes into custom ASICs, bypassing discrete modules. Innolight and Eoptolink hold scale advantages in datacom transceivers, but PCIe-over-optics is a new protocol stack—an 18-month first-mover window. Over 24 months, the copper-to-optical shift cascades from rack-level to board-level. Amphenol and TE Connectivity face 10-15% structural revenue erosion by 2027. The long-tail effect: optical standardization will force a new trinity of EML lasers, silicon photonics, and fiber connectors—replaying the 10G-to-800G transceiver supply chain restructuring.