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Researchers claim new internet speed record of 44.2 Tbps

   44.2 Tbps over a fiber cable, using a single chip
   By Jon Porter@JonPorty May 22, 2020, 8:47am EDT 

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   Photo by Michele Doying / The Verge

   Researchers based out of Australia’s Monash, Swinburne, and RMIT universities say they’ve set a new internet speed record of 44.2 Tbps, according to a paper published in the open-access journal Nature Communications. That’s theoretically enough speed to download the contents of more than 50 100GB Ultra HD Blu-ray discs in a single second.

   What’s interesting about the research is that it was achieved over 75km of standard optical fiber using a single integrated chip source, meaning it has the potential to one day benefit existing fiber infrastructure.

   The test fiber connection ran between RMIT’s Melbourne City campus and Monash University’s Clayton campus, and the researchers say it mirrors infrastructure used by Australia’s National Broadband Network (NBN). The findings represent a “world-record for bandwidth,” according to Swinburne University Professor David Moss, one of the team members responsible.
   "A “world-record for bandwidth down a single optical fiber from a single chip source”"

   “What our research demonstrates is the ability for fibers that we already have in the ground, thanks to the NBN project, to be the backbone of communications networks now and in the future. We’ve developed something that is scalable to meet future needs,” said co-lead author of the study and Monash University lecturer Bill Corcoran.

   Those speeds were achieved, thanks to a piece of technology called a micro-comb, which offers a more efficient and compact way to transmit data. This micro-comb was placed within the cable’s fibers in what the researchers say is the first time the technology has been used in a field trial.

   Now, the researchers say the challenge is to turn the technology into something that can be used with existing infrastructure. “Long-term, we hope to create integrated photonic chips that could enable this sort of data rate to be achieved across existing optical fiber links with minimal cost,” RMIT’s Professor Arnan Mitchell says.

   It’s unlikely that you’re going to be downloading games or streaming movies over a 44.2 Tbps connection anytime soon, however. If the technology ends up becoming commercialized, the researchers say that it’s likely to first be used to connect data centers. After all, gigabit internet connections have been available for years, and it’s still relatively uncommon to see them in residential homes. But if the technology becomes cheap enough, then the researchers hope it could one day be used by the general public.

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