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Podcast: Chaos Computer Club - recent audio-only feed
Episode: Channelmania! – future proof your DWDM network topology while keeping it flexible for 1.6T (denog17)
Description: Past approaches for maximizing the data capacity per fiber pair went for running more and more DWDM channels with grid spacings as small as possible. This meant that grid spacings shrank from 200GHz to 100Ghz and then 50GHz with some applications even going for 25Ghz. In recent years the bandwidth per channel kept increasing, as complex modulation schemes came into favor over ON-OFF-Keying which has been a staple in fiber optic communication for decades. Those increased per channel bandwidths of 400Gbps, 800Gbps and now pushing into the 1.6Tbps realm demand for lager grids to accommodate the spectrum necessary to operate...