The researchers set a new record for data transfer speeds of 1.02 petabits per second (Pb/s) using fiber-optic cables compatible with today’s infrastructure.
The 4-core fiber optic cable that the NICT team uses to transmit data has a diameter similar to today’s standard fiber optic cables. Image: Flipboard
One petabit (Pb) is equivalent to one million gigabits (Gb), which means the new record is about 100,000 times faster than today’s fastest household Internet speed. Even the US Space Agency (NASA) will only reach 400 Gb / s when the ESnet6 computer network comes into operation in 2023. In theory, 1 Pb / s speed allows 10 million video channels to be broadcast. per second with 8K resolution.
The new record was set by a team at the Institute of Information and Communication Technology (NICT) in Japan through several emerging technologies. First, fiber optic cable contains 4 cores, instead of one core as usual. Signal transmission bandwidth is extended to 20 THz thanks to wavelength optical multiplexing (WDM) technology. The researchers created that band from a total of 801 wavelength channels in three bands, including the C-band, the L-band, and the experimental S-band. With the help of optical amplification and signal modulation technology, the team was able to achieve a record speed of 1.02 Pb/s, transmitting data over 51.7 km of optical fiber.
This is not the first time scientists at NICT have crossed the one-Pb/s mark in data transmission. In December 2020, they reported a record of 1.01 Pb/s, using a single-core fiber optic cable and encoding data into 15 modes. The new record is not only faster, but it also transfers one mode per core, meaning data can be read using today’s technology. On top of that, the 4-core fiber optic cable has the same 0.125 mm diameter as the standard cable, making it compatible with the infrastructure and manufacturing process. The team announced the record at the 2022 International Conference on Laser and Electrooptics taking place at the end of May.
An Khang (Follow New Atlas)
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