Next-Gen Fiber for AI Unveiled at MWC

Hollow-core fibre (HCF) transmits light through an air-filled central channel instead of a solid glass core. This allows data to travel at nearly the speed of light in a vacuum, up to 47% faster than in conventional silica fiber, which slows light down by about 30%. The result is a latency reduction of approximately 30-34%. This technology translates to a latency of about 3.3-3.5 microseconds per kilometer, a significant improvement over the 5 microseconds per kilometer typical of standard fiber. Recent breakthroughs have also pushed signal loss, or attenuation, in HCF to below 0.1 dB/km, outperforming the best traditional fibers which are around 0.14 dB/km. For AI applications, this ultra-low latency is critical for synchronizing large clusters of GPUs, minimizing idle time and accelerating the training of complex models. For data centers, the reduced latency and extended signal reach allow facilities to be located farther apart, enabling operators to choose sites based on lower land costs or proximity to renewable energy sources without performance penalties. Yangtze Optical Fibre and Cable (YOFC) is one of the world's largest manufacturers of fiber optic cables, holding a significant share of both the Chinese and global markets. The company operates eight production facilities across six countries and serves more than 100 markets worldwide. Major tech players are already integrating this technology. Microsoft is a key adopter, deploying thousands of kilometers of hollow-core fiber to enhance its Azure global cloud infrastructure for AI workloads. This industry adoption signals a broader move to upgrade the foundational infrastructure of the internet and cloud computing. Beyond speed, HCF offers significant power savings. The lower signal loss reduces the need for power-intensive optical amplifiers and signal boosters along a fiber route, lowering operational costs and the carbon footprint of data transmission. The technology's advantages extend to other latency-sensitive fields. High-frequency trading, where microseconds can determine profit or loss, is a prime use case. Other potential applications include 5G/6G mobile networks, quantum communication, and remote operation technologies that require near-instantaneous data transfer.