Al Yuen

PicoJool's Al Yuen: The Case for GaAs VCSELs in Scale-Up Interconnects

Al Yuen argues PicoJool can scale AI interconnects with GaAs VCSELs because the supply chain is already built for high-volume data-center production, unlike constrained single-mode/InP alternatives. The episode focuses on error-rate requirements, 200G VCSEL product options, and a roadmap from 1.6T toward 3.2T and 12.8T without requiring new manufacturing breakthroughs.