GPU-HBM Packaging Welcomes New Fiber Interconnection Solution. "Optical-In Copper-Out" Accelerates, Optical Communication Sector Leads Gains in Early Trading. - TradingKey

On May 26, optical communication stocks surged in early U.S. trading as advancements in GPU-HBM integration using fiber optic interconnects gained momentum. This innovative approach overcomes the phys... Read original →

The integration of fiber interconnects into GPU-HBM stacks marks a fundamental architectural shift driven by AI’s physical scaling limits. Technically, it forces co-evolution across silicon photonics, specialty fibers, and optical DSPs, accelerating the transition from 2.5D to true 3D heterogeneous integration. On compliance, U.S. export controls on advanced packaging now implicitly cover optical interconnect materials—posing supply chain risks for Taiwan, China and Hong Kong, China OSATs reliant on U.S.-origin components. Strategically, Broadcom may counter NVIDIA’s $2B bet on Marvell through aggressive silicon photonics M&A, while Amphenol and Corning are positioned to set new interface standards. Within 18 months, 'optical-in, copper-out' will extend beyond intra-rack links to AI cluster interconnects, rendering pure-play OSATs without photonic capabilities obsolete.