Physical Science

This experimental device would allow a throughput of 10 terabits per second

American scientists have developed a prototype DSL-based system that could theoretically provide a speed of 10 terabits per second, when the optical fiber peaks at “only” 10 gigabits per second. Explanations.


A DSL-based system with phenomenal speed

This radical leap would be made possible by switching to an extremely high frequency for data transfer, which would compress a greater bandwidth, therefore a larger volume of data, within the same space, and thus increase the overall transfer rate. Until now, many doubts remained about the possibility that a waveguide (device for guiding electromagnetic waves and keeping them in a confined environment for a certain distance) at higher frequencies proves to be sufficiently protected against interference, but the authors of this new study, published in the journal Applied Physics Letters, believe they have found the solution.

It is fascinating to show that a waveguide can support a data rate of 10 terabits per second, even if only over a short distance “, Estimated Daniel Mittleman, physicist atRhode Island Brown University and lead author of the study. ” It goes far beyond anything anyone has ever imagined. Our work demonstrates the feasibility of this approach for high speed data transmission, which can be further exploited when the sources and detectors have reached a sufficient level of maturity.. “

A RJ45 cable, used for both connections Ethernet and for telephone connectors.

Up to 10 terabits per second, but over a limited distance

The work of the team is based on technology DSL, offering a high transfer rate via standard telephone lines. Usually, the frequency of the signal passing through this way is only a few megahertz only, but using a device composed of two parallel wires (reproducing the behavior of the pairs of twisted wires found in telephone cables) held together in a sheath metallic, the team was able to increase it to 200 gigahertz. Thanks to this process, researchers believe that a speed of up to 10 terabits per second could be reached over a length of 3 meters, against 30 gigabits per second from 15 meters.

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The American researchers explained that a higher range was not possible today because of the loss of energy, or ohmic loss, taking place through the metal enclosure. Therefore, the next step in their work will be to examine how to limit this phenomenon. However, even as it stands, this approach could prove particularly useful for installations where information travels over short distances, such as data centers.

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The increase in data usage by consumers has increased the demand for higher speeds in telecommunications, whether wireless or wired systems, hence the need to innovate in order for today’s infrastructure can answer it “Conclude the researchers, who believe that this approach would be enough to meet global demand until the arrival of the quantum internet, one of the main innovations currently explored.

Based on a planetary network of high-powered machines operating according to the principles of quantum theory and connected via special telecommunications lines, the quantum internet would prove to be much faster than the conventional internet and would also have the advantage of guaranteeing the secrecy of communications with an incomparable level of protection.
 

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