Achieved through six types of amplifiers and an optical gain equalizer
Japanese researchers set new world record for data transfer at 402 Tb/s
Surpasses previous record by over 25% and increases transmission bandwidth by 35%
Uses currently used WDM technology to cover all major transmissions
In a groundbreaking achievement, researchers at Japan's National Institute of Information and Communications Technology (NICT) have set a new world record for data transfer by transmitting 402 terabits per second (Tb/s) over commercially available optical fiber cables. This record-breaking performance was presented at the Optical Fiber Communication Conference 2024 in San Diego, with contributions from the Aston Institute of Photonic Technologies and Nokia Bell Labs.
The team achieved this feat by utilizing six types of amplifiers and an optical gain equalizer that tapped into the unused 37 THz bandwidth. One of these amplifiers was a thulium-based doped fiber amplifier, which uses C-band or CBL band systems. Semiconductor optical amplifiers and Raman amplifiers were also employed, resulting in a data rate of 256 Tb/s through almost 20 THz.
This accomplishment surpasses the previous data rate capacity by over 25 percent and increases transmission bandwidth by 35 percent. It demonstrates the untapped potential of current technology and potentially extends the lifetime of existing infrastructure while future-proofing networks.
The researchers used 1,505 channels over 50 km (approximately 31 miles) of optic fiber cable for this experiment. The findings indicate that currently used wavelength division multiplexed technology (WDM) can cover all major transmissions and provide these speeds using unexplored bands.
While beyond 5G potential speeds are achievable through commercially available cables, new types of cables and hardware will be required for widespread implementation. This achievement is a significant step towards a new generation of internet services, with research continuing to develop new amplifying methods and components while exploring the compatibility of wideband with currently deployed infrastructure.
Researchers at National Institute of Information and Communications Technology in Japan set a new world record by transmitting data at 402 terabits per second through an existing fiber optic line.
The achievement increases the usable transmission bandwidth by 35% and shatters the previous record data rate over conventional fiber by more than 25%.
This approach will help deliver high-speed Beyond 5G services by lighting up new wavelength territories across deployed fiber networks, potentially extending the lifetime of existing infrastructure and future-proofing networks.
Researchers at Japan's National Institute of Information and Communications Technology (NICT) set a new data-rate record of 402 terabits per second using commercially available optical fibre.
The new record is roughly 5 million times faster than the average broadband speed in the UK, which was 69.4 Mbps in 2023.
Under optimal lab conditions, the latest speed could download roughly 12,500 films in a single second.
An international joint research team led by Japan’s National Institute of Information and Communications Technology (NICT) achieved a record-breaking aggregate optical transmission bandwidth of 37.6 THz, enabling a new data-rate record of 402 Tb/s in a standard commercially available optical fiber.
Newly developed technology is expected to make a significant contribution to expanding the communication capacity of optical communication infrastructure as future data services rapidly increase demand.
Results were accepted as a post-deadline paper at the 47th International Conference on Optical Fiber Communications (OFC 2024) and presented by Ben Puttnam on March 28, 2024.
Researchers expanded DWDM transmission to cover all the major transmission bands in the low-loss window of standard optical fibers to enable more than 1,500 parallel transmission channels within an aggregate 37.6 THz (275 nm) optical bandwidth.
The world’s first O to U-band transmission system capable of DWDM transmission in a commercially available standard optical fiber was constructed using custom designed amplifier technology.
A wideband DWDM signal including up to 1,505 channels covering 275 nm (37.6 THz) was transmitted over 50 km of water absorption peak suppressed optical fiber.
High data rates were achieved by using dual polarization (DP-) quadrature-amplitude modulation (QAM) with up to 256 symbols per constellation.
Japan's National Institute of Information and Communications Technology set a new world record for data transfer at 402 Tb/s over commercially available optical fiber cables.
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No formal fallacies found. However, there are some implicit assumptions and a potential appeal to authority. The author mentions the contributions of the Aston Institute of Photonic Technologies and Nokia Bell Labs without providing specific details on how these contributions were made.
]Japan's National Institute of Information and Communications Technology, in association with other institutes, set a 402 Tb/s data transfer record over commercially available optical fiber cables.
