{"id":15155,"date":"2012-05-03T20:23:29","date_gmt":"2012-05-04T00:23:29","guid":{"rendered":"http:\/\/rbachnet.wwwmi3-ss40.a2hosted.com\/index.php\/"},"modified":"2021-07-25T17:32:44","modified_gmt":"2021-07-25T21:32:44","slug":"germans-reveal-512gbps-data-transmission-breakthrough","status":"publish","type":"post","link":"https:\/\/rbach.net\/index.php\/germans-reveal-512gbps-data-transmission-breakthrough\/","title":{"rendered":"DT Does 512 Gbps Data Transmission"},"content":{"rendered":"

\"DT<\/a>Deutsche Telekom<\/a>\u00a0set a new data transmission speed record. <\/strong>They set the record\u00a0by pumping 512 Gigabits per second over 456 miles. <\/strong>DT used a single 100 GHz wavelength channel over optical fiber according<\/a> to David Meyer<\/a> at GigaOm<\/em><\/a>. The Berlin-based T-Labs<\/a>\u00a0OSIRIS (Optically Supported IP Router Interfaces) research project sent 512 Gbps down each channel of a production network from Berlin<\/a> to Hannover<\/a> and back again. The usable data rate was 400 Gbps, overhead takes up the rest.<\/p>\n

\"What<\/a>Since each fiber strand can carry up to 48 wavelengths in the case of the T-Labs system. T-Labs\u2019 new tech should mean a staggering 24.6 Tbps (terabytes per second) max throughput for each optical fiber. \u201cWhen using all of the channels of an optical fiber … the new process permits a throughput of up to 24.6 Tbit\/s (24,600,000,000,000 bit\/s) to be attained on the maximum of 48 available channels,\u201d\u00a0 T-Labs Manager Heinrich Arnold told<\/a> TechWeek Europe<\/em><\/a>. GigaOm<\/em> says that \u201ca collection of 3,696 CDs could thus be transferred over a single optical fiber at the same time\u201d using the new technique.<\/p>\n

T-Labs says existing networks don\u2019t need cable replacements to take advantage of the new speeds The firm achieved the new bandwidth record by using new technologies developed with Alcatel-Lucent<\/a> (ALU<\/a>). The new AlcaLu gear was installed in the terminal stations at either end of the fiber.<\/p>\n

\"QAM<\/a>The BBC<\/a><\/em> says<\/a> that much of the speed gain came through improvements to the software used for forward error correction (FEC). TechWeek Europe<\/em> says DT also used other creative transmission technologies. They used two carrier frequencies, two polarization planes, 16-QAM<\/a> quadrature amplitude modulation. “You can imagine it as squeezing and tilting the entire set-up around to get more capacity out,” Mr. Arnold told the BBC<\/em>.<\/p>\n

But there are still an awful lot of copper-based networks in existence, The high value of copper makes copper-based networks vulnerable to copper theft. Also, despite advances in Copper such as ADSL2+ and VDSL2 (which I wrote about here<\/a> and here<\/em>) fiber is a much more \u201cfuture proof\u201d material.<\/p>\n

rb-<\/em><\/strong><\/p>\n

\"Ronnie<\/a>

Ronnie thumbs up for high-speed data<\/p><\/div>\n

Do the screaming hot network happy dance, the usable per-channel bit-rate is 400 Gbps, 4x the maximum bit-rate in today\u2019s 100 Gbps per channel state-of-the-art networks, which is a huge capacity boost. This is more than double the 186 Gbps record set by researchers in the US and Canada last year (Which I wrote about here<\/a>). This tech will most likely be deployed by the Telco’s and Cableco’s who need to support an FTTx strategy, it’s gonna be a long time until these speeds reach most enterprises.
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