NICT also said that it achieved this when using cables of the same size as cables used in today's trade. This speed is fast enough to download more than 10,000 4K movies in 1 second.
NICT successfully transmitted 1.02 petabits (1.02 x 1,000,000 gigabit) of data per second over a distance of 1,808 km using a 19- core fiber optic cable. If calculating the transmission capacity index of over 1 km, it can reach 1.86 exabits per second - this is the largest speed ever recorded.
According to NICT's report, this result shows a big step forward in the development of networks with expansion capabilities, high capacity and solving the world's increasing data needs.
For many years, scientists have tried to increase the amount of data that can be transmitted via fiber optic cables. However, although it has been transmitting petabits of data per second before, this can only be done at a short distance of less than 1,000 km. Long-range data transmission is always a challenge because the signal weakens when moving, requiring amplification through multiple cable poles and minimizing noise.
The new research team solves the problem by designing a special 19- core fiber optic cable. All core cables are packaged in cables only 0.125 mm thick, the same size as cables used in current infrastructure.
Each independent data transmission core, combined with each other, allows huge amounts of information to pass through. Researchers are also developing a smart diffusion system. The optical signal weakens as it moves along the cable, so an amps are needed to increase. However, each core must be amplified simultaneously and on 2 different light strips (CC and L frequencies).
