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Breakthrough: 430 Tbps Data Transmission Achieved Over Fiber

1/20/2026

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Summary

Story summary

Researchers led by the National Institute of Information and Communications Technology (NICT) in Japan and Aston University in the UK transmitted data at 430 Tbps over standard fibre.
They increased the rate using shorter O-band wavelengths and three-mode transmission, improving spectral efficiency and reducing bandwidth by about 20%.
In a related advance, researchers achieved 2 Tbps in free-space optical communications over 7.4 kilometers despite environmental interference.

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Story summary

Researchers led by the National Institute of Information and Communications Technology (NICT) in Japan and Aston University in the UK transmitted data at 430 Tbps over standard fibre.
They increased the rate using shorter O-band wavelengths and three-mode transmission, improving spectral efficiency and reducing bandwidth by about 20%.
In a related advance, researchers achieved 2 Tbps in free-space optical communications over 7.4 kilometers despite environmental interference.