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50,000 movies in a second: What Japan's 319 Tbps internet speed


Researchers at the National Institute of Information And Communications Technology in Japan have set a new world record for the world’s fastest internet speed at 319 Terabytes per second in the form of a long-haul transmission over 3,001 kilometers

The record was earlier held by researchers from the University College of London at 178 Tbps.

The research was led by Benjamin Puttnam and successfully completed the first S, C, and L bands transmission over long haul distances through a four-core optical fiber in the standard diameter of 0.125mm. They revealed that the use of erbium and thulium-doped fibre amplifiers along with Raman amplification made this unbelievable feat possible.




As per the teams, they developed a transmission system with the ability to make use of the whole wavelength division multiplexing technology. They made use of different amplifier technologies to achieve a transmission demonstration data rate of 319 Terabytes per second. Along with this, they also became the first to produce 957 petabits per second x kilometer -- setting a world record for optical fibers that possess a standard outer diameter.

In the paper, researchers have revealed that apart from the C- and L- bands that are often used with high data rate and long-distance transmission, the team also made use of the transmission bandwidth of the S-band that had remained underutilized except the single-span transmission.

What 319 terabytes per second mean:

1. The full form of Tbps is terabytes per second. One terabyte means 1,000 gigabytes. One gigabyte is 1024 megabytes.

2. According to a report of 2020, the highest mobile broadband speed was experienced in South Korea, which was around 100 Mbps (megabytes per second).

3. The same report said Singapore had the highest fixed-line broadband speed, which was 2015 Mbps.

4. Hong Kong, according to the report, had an internet speed of 210.73 Mbps and Romania had 194.47 Mbps speed.

5. India's download speed was shown as 38.19 Mbps in the case of fixed broadband and 12.16 Mbps in the case of mobile broadband, the 2020 report said.

6. With 178 Tbps, the last-held record of the fastest internet speed, one can download entire Netflix in just one second, reports said. With almost double that speed, entire Netflix will be insufficient for 319 Tbps.


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