Data Transfer: 400 DVDs per second
It seems that in the near future we are waiting for another round of evolution of the development of wired data networks. Scientists from Bell Labs, working under the strict supervision of laboratory owners from Alcatel Lucent, were able to set a record for data transfer speeds. And for long distances (about 7,000 kilometers). The fiber record is broken ten times.
For the experience, the researchers used 155 lasers, each of which transmitted data at a speed of 100 Gbit per second. The luminous flux of lasers is combined, divided into color components at the end point. Data is decoded using digital signal processors with coherent demodulation technology, separately for each wavelength. In addition, the distance between repeaters was increased to 90 kilometers.
As a result, the speed was such that 400 single-layer DVDs can be siphoned over a distance of 7,000 km in just a second. 15.5 terabits per second, after all. If measured in “standard units for measuring data transmission speed over long distances,” then the speed is 100 petabs per second-kilometer.
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via 3dnews
For the experience, the researchers used 155 lasers, each of which transmitted data at a speed of 100 Gbit per second. The luminous flux of lasers is combined, divided into color components at the end point. Data is decoded using digital signal processors with coherent demodulation technology, separately for each wavelength. In addition, the distance between repeaters was increased to 90 kilometers.
As a result, the speed was such that 400 single-layer DVDs can be siphoned over a distance of 7,000 km in just a second. 15.5 terabits per second, after all. If measured in “standard units for measuring data transmission speed over long distances,” then the speed is 100 petabs per second-kilometer.
')
via 3dnews
Source: https://habr.com/ru/post/71054/
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