Japanese researchers from the National Institute of Information and Communications Technology recently set a new world record for data transmission speed. Now it is 319 Tbps and the data was transmitted via a special optical fiber over a distance of 3,000 kilometers.
Thus, the data was transferred almost twice as quickly as the previous record held by the University College of London (178 Tbps). This is enormous speed: more than 50,000 messages can be sent over the connection in one second. feature films, and the entire Spotify catalog can then be downloaded in less than three seconds.
For data transmission, a 4-core optical fiber with a standard cladding diameter was used, the outer diameter of which was 0.125 mm. Data was transmitted on 552 channels using the WDM (Wavelength Division Multiplexing) technique.
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The speed described was of course obtained under laboratory conditions. In practice, computer connections operate much slower, and the record holder here is Singapore, which currently has the fastest fixed broadband connection, running at an impressive 2015 Mbps.
The scientists hope that the technology they developed will be used in practice and will enter, for example, connections supporting 5G networks, thereby significantly increasing their throughput.
