Scientists from Japan’s National Institute of Information and Communication Technology (NICT) broke the Internet data transmission record, reaching a speed of 319 Tbps. This is almost double what the British and Japanese research teams achieved in August 2020 (178 Tbps).
The fiber-optic line received four cores instead of one, while the diameter of such a cable is similar to a conventional single-core. The data was transmitted using a technology called wavelength division multiplexing. The laser emits a signal that is divided into 552 channels and sent along four strands of fiber.
Amplifiers are installed at intervals of 70 kilometers over the fiber, which increases the signal strength to minimize data transmission losses over long distances. These are new types of amplifiers that use rare elements of thulium and erbium.
Overall, the average data transfer rate per channel was about 145 Gbps for each core and about 580 Gbps for all four combined.
The new technology is compatible with existing infrastructure, making it easy to upgrade. The team plans to continue working on their long-distance data transmission system to increase bandwidth and expand the data transmission range.
A source: Science Alert