Story perspectives

China Telecom Trials 51.3 Tb/s Hollow-Core Fiber Over 128 Miles

6/29/2026

Summary

Story summary

China Telecom, Yangtze Optical Fibre and Cable Joint Stock Limited Company, and Dekoli completed a field trial of a hollow-core fiber system delivering 1.2 Tb/s per wavelength.
The trial reached 51.3 Tb/s over about 128 miles without repeaters.
Adaptive per-wavelength control and a cascaded dual-gain-unit amplifier with doping enabled hybrid transmission and provided flat gain up to 33 W output power.
TrendForce released the results when safety systems detected anomalies and shut down interlocks.

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Story summary

China Telecom, Yangtze Optical Fibre and Cable Joint Stock Limited Company, and Dekoli completed a field trial of a hollow-core fiber system delivering 1.2 Tb/s per wavelength.
The trial reached 51.3 Tb/s over about 128 miles without repeaters.
Adaptive per-wavelength control and a cascaded dual-gain-unit amplifier with doping enabled hybrid transmission and provided flat gain up to 33 W output power.
TrendForce released the results when safety systems detected anomalies and shut down interlocks.