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Researchers have broken the world record for the fastest internet speed after constructing and demonstrating a data transmission system that makes full use of wavelength division multiplexing technology by combining different amplifier technologies, to achieve a data transmission rate of 319 terabits per second (Tb/s) through optical fibers, over a distance of 3,001 km, and is compatible with existing cable infrastructure.
Using a comparison metric of optical fiber transmission, “the data rate and distance produce of 957 petabits per second x km, is a world record for optical fibers with standard outer diameter” reports Eurekalert. Now for comparison, this new speed of 319 TB/s is almost twice the previous record of 178 Tb/s, set less than a year ago, Even NASA has only 400 Gb/s speed, with the fastest home internet speed top out at 10 Gb/s. Making this new record incredibly fast.
To achieve this speed researchers from the National Institute of Information and Communications Technology, Network Research Institute, used a 4-core optical fiber rather than the standard single-core and a technique called wavelength-division multiplexing (WDM) to break the signal into multiple wavelengths which are transmitted simultaneously. A rarely used third >120nm transmission bandwidth allowed 552 wavelength-division multiplexed channels.
