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Transmission trial breaks all records
Ericsson has proven its position as a leading provider of long-distance optical transmission networks in a pioneering trial with T-Com, Deutsche Telecom's broadband/fixed-network division.
October 13, 2006
With this technology, long distance bandwidth is increased four times on existing fiber infrastructures. It will allow operators to undertake a cost-efficient evolution to higher optical link capacities on existing and new infrastructure.
Joerg-Peter Elbers, a technology director at Ericsson Germany and manager of the team executing the test, says: "With its efforts in 40Gbps development, Ericsson is well placed to address the take up of 40Gbps deployment, which is expected to start during the course of 2007. With this trial we have shown that we can provide an attractive solution to our customers accommodating future IP-traffic growth for increasing broadband services."
The technique used in the trial was based on the new modulation format return-to-zero differential quadrature phase shift keying (RZ-DQPSK) that enables long-distance transmission of 40Gbps on today's 10Gbps Dense Wavelength Division Multiplexing (DWDM) infrastructure.
The trial was the first field experiment with this technique covering a distance of more than 1000 km. It was conducted over a T-Com fiber link between the German cities of Nuremberg and Oschatz. The link was equipped with Ericsson's WDM platform.
Elber says the trial demonstrates Ericsson's leadership in optical networks and how innovative the company is in this area. "We are the first to bring this 40Gbps technology to the field and show that it really works. It has been tested before in laboratory experiments, but never in real life on installed fiber infrastructure.
"T-Com is the leading customer for this new technology. The trial lasted more than a month and we worked very closely with them during the entire period."
Stefan Kindt, head of Ericsson Germany, says: "Cooperation and trials with major customers such as Deutsche Telekom in areas of novel technologies are of vital interest for Ericsson. This trial has brought us a major step forward towards a common objective we share with our customers - achieving robust 43Gbps DWDM transmission over long distances at a competitive price."
Kindt says the latest trial highlights the benefits of the Marconi acquisition to Ericsson's customers. "Both fixed and mobile operators value having a strategic partner and a provider of end-to-end solutions - including broadband access, leading-edge microwave and optical transport networks."
Read more in the press release
