GoKawiilChinese researchers hit 3.2 Pbps real-time speed on single optical fiber
A team from CICT's National Key Laboratory, Peng Cheng Laboratory and FiberHome Fujikura achieved 3.2 petabits per second of bidirectional data transmission over a 24-core optical fiber spanning 10.3 kilometers. This surpasses the group's earlier 2.5 Pbps record set earlier this year, using thousands of parallel channels across three wavelength bands and in-house optical modules designed for real-time, commercial-grade performance rather than lab-only experimental gear.
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The researchers suggest this kind of capacity could become necessary as single-mode fibers approach physical limits amid surging AI data center traffic. If the technology can be scaled into commercial networks, it could support backbone infrastructure for AI computing clusters and future 6G wireless systems, though the demonstration remains a short-distance, specialized hardware test rather than a deployed network solution.
- New real-time record: 3.2 Pbps achieved over a 24-core fiber across 10.3 km
- Represents a jump from the same team's 2.5 Pbps record earlier this year
- Researchers link the advance to growing data demands from AI infrastructure and future 6G networks
Source: techspot.com — Alfonso Maruccia, 2026-10-27
Published there as: “Researchers set a real-time fiber record: 3.2 petabits per second over 10.3 kilometers”
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