Chinese Firms Demonstrate 51.3Tb/s Hollow-Core Fiber Over 128 Miles
Updated
Updated · Interesting Engineering · Jun 27
Chinese Firms Demonstrate 51.3Tb/s Hollow-Core Fiber Over 128 Miles
1 articles · Updated · Interesting Engineering · Jun 27
Summary
1.2Tb/s per wavelength was demonstrated in what the project team called the first real-world field trial of a hollow-core fiber transmission system, led by China Telecom, Yangtze Optical Fibre and Dekoli.
51.3Tb/s of total capacity traveled roughly 128 miles on the world's longest commercial cross-border hollow-core fiber cable without signal repeaters, marking a benchmark for long-distance high-capacity links.
Hollow-core fiber sends light through air rather than solid glass, cutting latency and lifting capacity; the trial also tackled a key hurdle by proving stable high-power transmission outside the lab.
33.5 dBm maximum output came from a new cascaded dual-gain amplifier design, while adaptive per-wavelength rate control and flexible power allocation improved performance and stability across channels.
The result strengthens the case for hollow-core fiber in next-generation backbone networks and large-scale data centers, where lower delay and higher throughput are increasingly critical.
As China masters light-speed data, is the West losing the race for the internet's future?
Will this breakthrough render today’s global internet infrastructure obsolete?
Beyond record speeds, what is the true cost of rewiring the world with this technology?
New World Record in Hollow-Core Fiber Transmission: China’s Breakthrough and the Global Battle for Next-Gen Optical Networks
Overview
A collaborative team from China Telecom, YOFC, and Dekoli has set a new world record in optical transmission by successfully achieving high-power transmission in a live-network hollow-core fiber (HCF) environment. This marks the first time such a feat has been accomplished, representing a major leap forward in the field. The team rigorously validated HCF’s high-speed capabilities in real-world conditions, setting a new benchmark for practical application. Their success was made possible with strong support from national facilities, highlighting the importance of collaboration and advanced infrastructure in driving innovation in optical communications.