AWS Unveils Hollow Core Fiber That Transmits Data 50% Faster

AWS’s deployment of hollow core fiber (HCF) in its data centers, linking over 10 facilities, points to a clear strategy for managing the physical expansion limits of hyperscale infrastructure. The 50% speed increase and 30% latency improvement over conventional fiber are critical for AI workloads, where network performance is as vital as GPU power. Stephen Callaghan, principal engineer for network development at AWS, notes that in Project Rainier, a problem in any single part of the network can halt over a million GPUs, underscoring the importance of network efficiency. The adoption of HCF, combined with AWS’s proprietary dense wavelength division multiplexing (DWDM) optical transponders, which boost bandwidth by 73% and cut power consumption by 35%, suggests a move to differentiate its cloud offerings. While rivals also use HCF, AWS’s claim to be the only company using DWDM optical transponders on long-haul networks could give it an edge in serving latency-sensitive applications across its 123 data center groups in 39 cloud regions. For Asian markets, this could translate into more robust and responsive cloud services, particularly as AI adoption drives demand for high-performance computing infrastructure.