[HN Gopher] Japan Shatters Internet Speed Record at 319 tb/s
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       Japan Shatters Internet Speed Record at 319 tb/s
        
       Author : kjeetgill
       Score  : 56 points
       Date   : 2021-07-16 16:37 UTC (6 hours ago)
        
 (HTM) web link (interestingengineering.com)
 (TXT) w3m dump (interestingengineering.com)
        
       | kjeetgill wrote:
       | From the Paper: We report the first experimental demonstration of
       | transoceanic distance real-time transmission over coupled
       | multicore fibers. The WDM DP-QPSK signals were transmitted over
       | 7,200-km coupled-core four-core fibers by a recirculating loop
       | and demodulated by real-time MIMO DSP.
       | 
       | From the headline I'd feared it was just about a new technology
       | still in the lab but it looks like they've already tested it fro
       | transoceanic cables.
       | 
       | I'd imagine this means more for island nations like Japan and
       | Australia's overall bandwidth than anything towards consumer
       | internet speeds.
        
         | runnerup wrote:
         | Just because it was 7.2 megameters, a "transoceanic distance",
         | doesn't mean it wasn't just 7.2 megameters of fiber all coiled
         | up in a lab room.
        
           | falcor84 wrote:
           | I'd expect the capability of creating thin enough fiber that
           | you could coil 7.2Mm of it in a single reasonably-sized room,
           | would be quite an achievement in its own
        
             | scottshamus wrote:
             | I've never worked with fiber optics but I wonder if that's
             | the point of the recirculating loop i.e. use a shorter
             | fiber but run the signal through it multiple times to
             | simulate a longer length.
        
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       (page generated 2021-07-16 23:03 UTC)