Japan has broken the world record for the fastest internet speed, hitting the data transmission rate of 319 Terabits per second (Tb/s).
Researchers at Japans’s National Institute of Information and Communications Technology (NICT) were able to provide 319 Tbps for internet speed, which is almost double the old record speed of 178 Tbps from UK and Japanese engineers last 2020.
The record was accomplished with a fiber-optic infrastructure, that stretched out to more than 1,864 miles (3,000km). The research team used four “cores” which are glass tubes housed within the fibers that transmit data. The signals are then broken down into several wavelengths sent at the same time, which employ a technique called wavelength-division multiplexing (WDM). To carry more data, a third “band” was used which extended the distance via several optical amplification technologies.
Additionally, the team used 552-channel comb laser that fires various wavelengths. These light streams are then processed and amplified by new kinds of fiber amplifiers doped in thulium and erbium. The process that follows after amplification is the regular Raman Amplification.
The team notes that this speed could be maintained for over 3000km without any performance drops. The plus side to this is that regular optical fiber infrastructures can support these types of speeds, but with modifications.