Verizon Business, in conjunction with Nokia Siemens Networks, completed a field trial earlier this year that involved the transmission of wavelength channels carrying multiple data rates (10 Gbps, 40 Gbps, 100 Gbps) over 1,040 kilometers on deployed fiber. A paper on the trial, which occurred in March 2008, is being presented at the European Conference on Optical Communication (ECOC). TU Eindhoven and the University of the German Federal Armed Forces in Munich also contributed to the paper.
The field trial involved the insertion of 111 Gbps channels in spectral positions that were adjacent to other channels carrying 10 Gbps and 40 Gbps data rates, with a line system that had only been designed for 10 Gbps transmission. The 111 Gbps used advanced optical techniques allowing a 100 Gbps data channel to occupy a very narrow spectral width and to accommodate spacing between channels of only 50 GHz, resulting in a total useable capacity of 80 channels. The companies said their trial also demonstrated that 100 Gbps traffic can be simultaneously transported with any mix of 10 Gbps and 40 Gbps on a typical 80-channel system. As a result, current network configurations can support capacity upgrades to 100 Gbps on existing routes over similar distances without modification to the physical network, providing quicker and more cost effective implementation.http://www.nsn.comhttp://www.verizonbusiness.com
