Japanese engineers broke the world record for the highest internet speed, achieving a data transfer speed of 319 Tb / s, almost twice as fast as the previous record of 178 Tb / s, set less ago one year.
A study presented at the International Fiber Optic Communication Conference in June found that Japanese engineers recently broke the world record for the highest internet speed, achieving a data transfer speed of 319 terabits per second ( Tb / s). The new record was set on a fiber cable that stretches over 3,000 kilometers, and it appears to be compatible with the current cable infrastructure.
The transmission speed is almost twice as fast as the previous record of 178 Tb / s, set less than a year ago and seven times faster than the previous record of 44.2 Tb / s set by a photonic chip experimental.
The US space agency NASA itself uses a fairly basic speed of 400 gigabits per second (Gb / s). However, the new record far exceeds the current speed available to customers: in regions of Japan, New Zealand and the United States, the fastest home internet connections reach 10 Gb / s.
This new achievement was made possible by combining the existing fiber optic infrastructure with more advanced technologies. Instead of the traditional standard core, the research team used four “cores,” which are glass tubes placed in the fibers that transmit data. Using a technique called wavelength division multiplexing (WDM), the signals are then split into many wavelengths and broadcast at the same time. To carry more data, a rarely used third “band” is added and the distance is increased using various optical amplification technologies.
The new system starts the transmission process with a 552-channel cam laser fired at different wavelengths. Double-polarized modulation is then applied to this light, delaying certain wavelengths to create distinct signal sequences, and after that, each of those signal sequences is fed into one of the four cores of the optical fiber. The data is transferred via 70 kilometers of optical fiber until it reaches optical amplifiers, which amplify the signal during its long journey. The signal passes through two new types of fiber amplifiers, one doped with thulium and the other with erbium, before continuing its way through the traditional Raman amplification process.
According to the Japanese National Institute of Information and Communication Technologies (ICT), the signal patterns are then guided into a new piece of fiber optic, and the Japanese research team was able to send data over a distance of 3,001 kilometers by repeating this process.
Once the protective jacket is taken into account, the quad-core optical fiber has the same diameter as a typical single-core fiber. This means that the new method will be considerably easier to integrate into existing infrastructure than previous technical redesigns of social information systems.
However, not only did Japanese scientists explode the 2020 record, but they did so with a new technical solution that can be easily integrated into modern fiber optic infrastructure.
Japan’s leading national ICT research institute for information and communications said it “will continue to develop broadband and long distance transmission systems and explore how to further increase the transmission capacity of multicore fibers. low-core count and other new SDMs In addition, we will work to extend the transmission range to transoceanic distances ”.