Japan's new internet speed record makes today's broadband look ancient

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Abstract

Japan set a brand new web pace file at 1.02 petabits per second, about 127,500 GB/s.
The achievement is round 3 million occasions quicker than the US common broadband pace of 288 Mbps.
The NICT used a 19-core optical fiber cable to attain the file pace, with a diameter of 0.125mm.

Over the previous 20 years, internet speeds have vastly improved because of advances in fiber expertise. Whereas gigabit web is turning into more common within the US, it nonetheless lags behind the speeds just lately achieved by researchers in Japan.

In line with the Nationwide Institute of Info and Communications Know-how (NICT) in Japan, it has set a brand new world file for web pace, reaching 1.02 petabits per second over a distance of 1,123 miles. That equals about 127,500 GB/s, and roughly the space between Chicago and Dallas. With that pace, you can obtain Netflix’s whole streaming library in only one second (through CNET). You’d additionally by no means have a difficulty downloading a 100GB online game ever once more.

Within the US, web pace is normally measured in megabits per second (Mbps). When you convert Japan’s achievement, it equals roughly 1,020,000,000 Mbps. In line with Speedtest, the typical fastened broadband web pace within the US is round 288 Mbps. So, the pace researchers in Japan have simply reached is greater than 3 million occasions quicker.

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How did NICT researchers obtain this?

They used a 19-core optical fiber cable

Japan’s NICT achieved its new web pace file by creating an optical fiber with 19 cores, built-in right into a cable measuring simply 0.125mm in diameter. This measurement is normal for fiber optic cables used globally, indicating potential for widespread adoption on account of its compatibility with current community infrastructure, like undersea cables.

“The analysis of ultra-high-capacity transmission utilizing coupled 19-core optical fibers and superior optical amplification has drastically superior the event of expertise for the conclusion of high-capacity, long-distance optical communication infrastructure sooner or later,” the NICT report states.

This is not the primary time the NICT has damaged a file both. Final yr, it shattered the web pace file with a pace of fifty,250 GB/s. Now in 2025, it has damaged its file by over double.

With the worldwide demand for increased web bandwidth rising — particularly for cloud storage, AI, and high-quality streaming — the NICT’s breakthrough marks an important step in addressing the growing want for extra bandwidth. In line with Nielsen’s Law, world bandwidth calls for have elevated by 50 % yearly since 1983, indicating that in the future, 1.02 petabits per second could also be wanted.