We've been seeing more and more trials of technology moving beyond the 100G mark this year, and today it was Verizon (NYSE:VZ, news, filings)'s turn to test it out. They put Ciena gear to work in a field trial of a 200G link between New York and Boston.
The trial used 16QAM on a single wavelength with 50Ghz spacing, doubling the amount of bits per wavelength over 100G. The link remained in place for more than a month with no impact to live customer traffic carried alongside it.
Just which speeds and combinations of technologies will emerge as the next rung on the DWDM ladder remain unclear to me. Is 200G enough of a jump over 100G to make a difference, or is it just a step on the way to 1Tbps?
But then, we don't quite need the bigger yet so there is time for things to shake out - though it surely won't be long before that changes.