Siemens Reaches 107 Gbps Data Transfer Record
prostoalex writes "Reuters is reporting on Siemens engineers reaching 107 Gbps data transmission record over a fiberoptic cable, and expects the technology to be on the market within a few years: "The test, 2.5 times faster than a previous maximum transmission performance per channel, was done in cooperation with Germany's Micram Microelectronic, the Fraunhofer Institute for Telecommunications and Eindhoven Technical University of the Netherlands.""
See also0 961327%5E15306,00.html
http://australianit.news.com.au/articles/0,7204,2
The bitrate ("speed") is always the same, no matter the distance. What changes is the bit error rate, which is proportional to the distance. For this particular test they defined a certain bit error rate as acceptable (don't really know which, 10^-15, 10^-16?) and when they say they did 107Gbps over 100km it means they've got the signal on the other side with a bit error rate low or equal to the defined one. When the bit error rate it just too high, you need to electrically regenerate the signal, which is almost like having a "normal" receiver and a "normal" transmitter (i.e. a diode and a laser, more or less) back-to-back. Sometimes you don't need to regenerate, but just need to give the signal a boost, in which case you'll set up some optical amplifiers along the way. Fun stuff really, specially when you get to the part if you want to boost up the signal in one direction of the fiber then you shoot a high power laser in the other direction.
I assume that's related to the institute that gave us the "proprietary" MP3?
p ), with widely varying research topics. More info as usual on Wikipedia (http://en.wikipedia.org/wiki/Fraunhofer_Society).
Well, if you want to call an MPEG-Standard "lock-in". I'm sure most users don't feel very "locked-in", it is probably the most widely supported digital audio standard, I would say. Sure, it is proprietary, and you have to pay license fees, but at least anyone can use it who wants it.
Nevertheless, you are wrong. It is not the same institute that gave you MP3. That was the Institute for Integrated Circuits in Erlangen (http://www.iis.fraunhofer.de/index.html). This is the Heinrich-Hertz-Institute in Berlin (http://www.hhi.fraunhofer.de/english/). There are about 60 institutes of the Fraunhofer Society in Germany (http://www.fraunhofer.de/fhg/EN/profile/index.js