The world record of optical fiber communication speed is updated at 178 Tbps, which is close to the theoretical value, the level at which all Netflix videos can be downloaded within 1 second
A single fiber optic communication over 40km achieved the world's fastest data transfer rate of 178.08 Tbps, a research team at
Optical Fiber Capacity Optimization via Continuous Bandwidth Amplification and Geometric Shaping-IEEE Journals & Magazine
https://ieeexplore.ieee.org/document/9144561
London UK Team Achieves Record 178Tbps Single Fiber Speed-ISPreview UK
https://www.ispreview.co.uk/index.php/2020/08/london-uk-team-achieves-record-178tbps-single-fibre-speed.html
UCL sets internet speed record of 178Tbps
https://www.capacitymedia.com/articles/3826180/ucl-sets-internet-speed-record-of-178tbps
The speed of 178 Tbps was achieved by a research team led by Dr. Lydia Gardino, a lecturer at University College London, and researchers at the Royal Academy of Engineering in collaboration with optical cable companies Xtera and KDDI Research Institute . About twice the capacity of systems deployed around the world. This record is close to the theoretical data transmission limit calculated by American mathematician Claude Shannon in 1949, the research team said, ``It took less than a second to download all the videos on Netflix, so far It takes less than an hour to download the raw data of the black hole image that was too big to store on the HDD and transport by air.'
Until now, the speed of 148.850 Tbps, which was achieved by the joint research team of the University of Tokyo, Fujitsu, CERN, etc. in November 2004, was recognized as the world record for the communication speed of a single data stream. The 178Tbps record can be deployed over existing infrastructure at a rate of 20% over the 2004 record, the team said.
In the experiment, a newly developed high efficiency amplifier called 'hybrid discrete Raman and rare-earth doped fiber amplifiers' is used. In addition, while general optical fiber communication uses a bandwidth of 4.5 THz, this research uses an ultra-wide band of 16.83 THz, and a single-core single-mode optical fiber cable is used at a distance of 40 km. It seems that the transmission throughput of was measured.
According to the research team, by introducing a newly developed amplifier at intervals of 40 km to 100 km, it will be possible to update the Internet infrastructure at a cost of about 4% compared to the case of installing a new optical fiber. ..
``Apart from the pandemic of the new coronavirus, Internet traffic has grown exponentially over the last decade and this overall growth in data demand has been associated with lower costs per bit,'' Dr. Gardino said. The development of new technologies will continue to drive this trend towards lower costs while meeting the ever-increasing demands for future data rates and not yet considering applications that change people's lives. Is very important.'
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in Hardware, Posted by log1i_yk