Researchers achieve 1Tbps data transfer speed2016-02-12 03:08 by Daniela
Researchers at University College London (UCL) have set a new record for data transfer rates with speeds of over 1Tbps. In comparison, current optical transmission systems can receive single channel data rates of up to 100 gigabits per second. Regular broadband connections run at 24 megabits per second (Mb/s).
The scientists used fibre optic cables to achieve the speed. They utilized techniques from information theory and digital signal processing to custom build an optical communications system with multiple transmitting channels and a single receiver.
"The focus of our work is to develop new techniques and subsystems that will push the limits of our optical communications systems," said Robert Maher, study lead author and a senior research associate at UCL's Electronic & Electrical Engineering department, over the phone.
"Using high-bandwidth super-receivers enables us to receive an entire super-channel in one go," Maher added. "Super-channels are becoming increasingly important for core optical communications systems, which transfer bulk data flows between large cities, countries or even continents. However, using a single receiver varies the levels of performance of each optical sub-channel, so we had to finely optimise both the modulation format and code rate for each optical channel individually to maximise the net information data rate."
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