The ultra-long-distance optical system LambdaXtreme Transport, developed by Lucent Technologies to provide a 40-Gbit/sec optical interface, has passed its first endurance tests in field conditions.
Deutsche Telekom conducted successful field trials in May, using the LambdaXtreme Transport system to transmit 40-Gbit/sec signals over a distance of more than 734 km with a standard fiber (SSMF) without any electrical regeneration. These successful tests represent a significant milestone with regard to range and everyday suitability of optical 40-Gbit/sec DWDM systems, say Lucent representatives.
The distance covered is also a milestone because increased data rates normally reduce the accessible distance due to physical effects within the fiber. For example, LambdaXtreme Transport can transmit 128 x 10-Gbit/sec optical signals up to 4,000 km without electrical amplification. For 64 x 40-Gbit/sec signals, the distance is up to 1,000 km, claims the company.
"The success of the LambdaXtreme Transport tests has proved that our 40-Gbit/sec technology is fully fit for everyday use," contends Dr. Rainer Fechner, head of Lucent's Nuremberg facility and responsible for Lucent's R & D activities in Germany, where product specialists from Nuremberg supported and conducted significant parts of the test. "And we're very excited to be able to provide our customers with the cost-effective and technically superior products they demand," he adds.
For more information about Lucent Technologies (Murray Hill, NJ), visit the company's Web site at www.lucent.com.