Sunday, October 5, 2008

Verizon Says 100G Trial with Nortel Demonstrates Commercial-Quality

Commenting on a recent trial of Nortel's 100 Gbps in its network, Verizon said the optical transmission technology performed with better tolerance for signal distortion than typically found in today's standard wavelength of 10G. Transporting data over 73 kilometers of field fiber in northeastern Texas at a 92 Gbps rate, the recent trial demonstrated twice the tolerance for signal distortion when compared with today's standard 10G signal.


The Nortel Optical Multiservice Edge 6500 convergence platform equipped with 40G/100G Adaptive Optical Engine technology integrates advanced signal-processing techniques that maintain sustained signal integrity despite significant polarization mode dispersion (PMD). PMD, a natural impairment of optical fiber transmission, causes a signal to distort as it travels along the optical fiber. This results in imperfections when the signal arrives at the receiver end and limits the amount of data that can be transmitted.


Last month, Verizon and Nokia Siemens Networks announced that they had successfully transmitted data at 100G on a single wavelength for more than 1,040 kilometers, setting a new distance record over deployed fiber and demonstrating better performance than conventional transmission.


In November 2007, Verizon and Alcatel-Lucent transmitted a commercial information package - a FiOS video stream - between Tampa, Fla., and Miami at 100G for the first time over a live network.


In the Nortel trial, Verizon transmitted the 100G traffic error-free using an advanced signal-processing method and signal-correcting techniques embedded in Nortel's technology. Preserving the level of quality for high-speed traffic is important for such ultra-long-haul network strategies as mesh architecture. http://www.verizon.com

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