Fujitsu raises the speed of optics

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POSTER: computer news   ||   FUJITSU RAISES THE SPEED OF OPTICS	DATE:2013-03-17
Fujitsu company , in the depths of its laboratory created a method of increasing the capacity of  channel, which does not even require new optical transceivers.  Using conventional 10-Gbit / s transceivers company was able to create solutions that transmit the signal through the channel at a rate of 100 Gb / s and even 400 Gb / s.   It must be said that the Japanese were original.  The base of its superfast Ethernet technology they put the method employed in this home standard as xDSL.  All you have to do is create a dedicated signal processor that would control package of 10-Gbit / s transceivers, by further raising the multiplexing rate on a single channel up to 100 Gb / s and 400 Gb / s (in the picture solution a channel with a bandwidth of 400 Gbit / s).   xDSL standard use DMT-modulation (discrete multi-tone modulation), which involves the breakdown of the data into a series of sub-carrier frequencies.  For each sub-carrier modulation, and uses its own correction, depending on the state of the transmission line.  In the case of  100-Gbit / s ports it may be unprofitable, but to create a 400-Gbit / s ports as long as there is simply no other option, so that the price issue  may not even be considered.   Related Products :

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