New Fiber Optics Target AI Infrastructure Needs
At MWC Barcelona, Yangtze Optical Fibre and Cable (YOFC) will unveil a new Hollow-Core Fibre (HCF) solution. The company claims the next-generation optical communication technology offers ultra-low latency, designed to strengthen the global infrastructure required for large-scale AI.
Hollow-core fiber guides light through an air-filled channel, unlike conventional solid-glass fibers. This design allows light to travel nearly 50% faster, approaching its speed in a vacuum and reducing latency by about a third. For AI workloads distributed across data centers, this speed increase can expand the maximum distance between facilities by 50%. Latency is a critical bottleneck in training large AI models, where massive datasets are continuously read and written. Delays in data transfer mean expensive GPUs sit idle, slowing down model training and increasing costs. Reducing latency directly translates to faster model convergence and more efficient use of computing resources. YOFC has demonstrated HCF with record-low signal loss (attenuation) of 0.05dB/km over a 21.7 km cable. This ultra-low loss, combined with reduced latency, is crucial for maintaining signal integrity over long distances, such as in undersea communications and large, geographically distributed AI training networks. In June 2024, YOFC and China Mobile launched the first 800G hollow-core fiber test network, demonstrating a bidirectional throughput of 128Tb/s. This real-world deployment showcased the technology's readiness for complex, high-demand environments and its potential for industrial-scale applications.
