100Gbit/s demonstration holds promise for fibre upgrades

Verizon and Nokia Siemens Network have used part of the existing Verizon optical-fibre network to carry channels at data rates of 100Gbit/s alongside channels carrying 10 Gbit/s and 40 Gbit/s on different wavelengths, over a distance of 1,040km.

In March, the two companies demonstrated the ability to run a 111Gbit/s channel alongside wavelengths carrying 10Gbit/s and 40Gbit/s data rates, over a fibre-optic connection designed to carry 10Gbit/s transmissions. That demonstration showed that a 111Gbit/s stream could deliver a 100Gbit/s data channel on a very narrow spectral width, so that a fibre could carry 80 such channels.

The trial also demonstrated that 100Gbit/s traffic can be transported alongside any mix of 10Gbit/s and 40Gbit/s channels on a typical 80-channel fibre. As a result, current networks could be upgraded to carry 100Gbit/s channels over similar distances without needing physical modifications.

A paper detailing the work will be presented at this week’s European Conference on Optical Communication. The paper was jointly written by Verizon, Nokia Siemens Networks, TU Eindhoven, and the University of the German Federal Armed Forces in Munich.

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