China’s hollow-core fiber trial pushes 51.3 Tb/s over 128 miles without signal regeneration — milestone targets AI-era networking bottlenecks China's progress largely sits outside the Western supply chain Chinese firm Yangtze Optical Fiber and Cable Joint Stock Limited Company (YOFC) announced on June 16 that it had successfully completed the world’s first field trial of hollow-core fiber (HCF) wa...