VSFF and MPO-16 Connectors Emerge as Key Enablers for 1.6T AI Data Center Cabling

AI data centers are rapidly upgrading from 400G/800G to 1.6T network speeds in 2026, driven by the demands of large language models and generative AI workloads on platforms like NVIDIA Blackwell. The explosive growth of East-West traffic within GPU clusters is placing extreme pressure on physical-layer infrastructure, including bandwidth, rack density, and thermal management. Traditional LC duplex connectors are increasingly inadequate for high-density switch ports, prompting a shift toward Very Small Form Factor connectors such as SN and MDC, which occupy roughly one-third the space of conventional LC connectors. MPO-16 trunk cables are also gaining traction as a parallel trend, enabling higher fiber counts per cable to meet exponentially growing interconnect demands. Together, these technologies represent a fundamental rethinking of optical cabling practices to support next-generation AI computing infrastructure.