China completed a 1,007.48-kilometer hollow-core fiber transmission trial, achieving 64 Tb/s in each direction and 3.43-millisecond one-way latency.

Financial_Express, citing Science and Technology Daily, reported completion of a hollow-core fiber transmission trial over 1,007.48 kilometers. The report described it as the first thousand-kilometer bidirectional, real-time hollow-core fiber transmission verification worldwide.

The trial achieved simultaneous transmission at 64 terabits per second in each direction. That figure is a directional transmission rate, not a single combined rate for both directions.

Reported one-way signal-transmission latency was 3.43 milliseconds, and the report described the distance as a new hollow-core fiber real-time transmission record. This was a technical validation; the supplied message does not identify a commercial network deployment, customer contract, or deployment schedule.