Researchers in Japan have demonstrated an internet speed of 319 terabits per second, setting a world record. A team of researchers at Japan’s Nation

Japan sets internet speed record by transferring 319 Tb/s over 3,001 km

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2021-07-19 12:00:05

Researchers in Japan have demonstrated an internet speed of 319 terabits per second, setting a world record. A team of researchers at Japan’s National Institute of information and communications technology (NICT) used advanced fiber-optic technology with a 4-core optical fiber of standard outer diameter of 0.125 mm to perform the speed test, breaking the previous record of 178 Tb/s set by engineers in Japan and Britain a year ago.

To achieve the record speed, the researchers constructed a recirculating transmission loop experimental set-up by combining two kinds of rare-earth-doped fiber amplifiers.

The combination of erbium and thulium doped-fiber amplifiers and distributed Raman amplification enabled a long-distance transmission of over 3,001 km.

“The 4-core MCF with standard cladding diameter is attractive for early adoption of SDM fibers in high-throughput, long-distance links, since it’s compatible with conventional cable infrastructure and expected to have mechanical reliability comparable to single-mode fibers,” the Japanese research institute said in a paper published earlier this month.