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German ISP goes live with Infinera's photonic transport system

Posted: 03 Feb 2005 ?? ?Print Version ?Bookmark and Share

Keywords:optical component? infinera? network?

Optical component and subsystem specialist Infinera revealed the first customer for its innovative networking system: German ISP freenet has gone live with a network based on the Digital Optical Network system that incorporates Infinera's tightly integrated optical integrated circuits.

"We have a number of customers and several trials for our innovative technology, in the US, Asia and Europe, but freenet, the second largest ISP in Germany with 6.4 million subscribers, is the first we can go public with," said Chris Champion, European director for Infinera.

The Sunnyvale, California company's Digital Transport Network (DTN) system will serve as the backbone of freenet's IP service.

Champion said the contract was won against tough competition, including the incumbent supplier to freenet, which started out as the fixed line division of German wireless operator Mobilcom.

Infinera has integrated active and passive photonic components on InP substrates, and used these highly inetgated parts onto line cards. Its process yields a 100Gb transmitter that integrates 10 discrete 10Gb distributed-feedback lasers, ten 10Gb modulators and an optical multiplexer. The companion receiver device integrates ten 10Gb photodetectors, a waveguide and an optical demultiplexer.

The company makes the parts in house at its own InP fabrication facilty, though the line cards that make up the DTN system are manufactured by CEMs.

On the systems front, the DTN, centered on a half-rack system, replaces traditional dense wave-division multiplexing (DWDM) systems with a digital node in which all bit streams can be observed and subwavelength channels can be managed. The system, measuring 40 x 23 x 12 inches, has an aggregate throughput of 400Gbps, and incorporates four 100Gb line cards that can multiplex 1- or 10Gb Ethernet, OC-48 and OC-192 traffic. Unlike analog-based transport nodes, the system can perform signal cleanup, multiplexing, grooming and add-drop functions.

Champion said the ISP was running out of capacity and needed to upgrade quickly from 2.5G to 10G routers and the transport system to go with this upgraded.

Commenting on the transport system, Andreas Jurgensen head of networks at freenet said: "This was the best, smoothest system turn-up and deployment I have seen. Infinera systems really are easier and faster to deploy than other vendors', taking only 3 days to turn-up the first 700km route."

- John Walko

EE Times

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