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PICs enable 100Gbit/s channels across Europe

Posted: 07 Mar 2011 ?? ?Print Version ?Bookmark and Share

Keywords:photonic ICs? Subsea pan-European? network? transmission?

Interoute Communications Ltd, and Infinera Corp. have demonstrated that Infinera's 500Gbit/s photonic integrated circuits (PICs) can deliver 100Gbit/s channels on Interoute's pan-European network.

Interoute deployed Infinera's 100Gbit/s photonic integrated circuits more than three years ago on its pan-European network. Now it is planning to use Infinera's next generation systems based on 100Gbit/s channels enabled by 500 Gbit/s PICs to deliver high capacity bandwidth based on coherent transmission of 100Gbit/s channels.

The demonstration took place between Amsterdam and London. The 100Gbit/s channels originated in Amsterdam and traveled under the North Sea to London, where they were looped back and returned to Amsterdam, for a total distance of 940km. The signals were received error-free despite a lengthy unrepeated subsea link of 210km between the Dutch and English coasts. Each 100Gbit/s channel is capable of carrying over 200,000 simultaneous video conferences based on standard definition point to point video conference call at 512kbit/s, between London and Amsterdam, or over 1.5 million telephone converzations at 64kbit/s.

This is the first demonstration of Infinera's PIC-based 100Gbit/s channels transmitted on a European network.

The coherent 100Gbit/s channels were transmitted on fiber simultaneously carrying 200Gbit/s of live traffic over 10Gbit/s channels, demonstrating that the Infinera Line System can carry both types of optical signals without interference. Interoute is planning to introduce PIC-based 100Gbit/s channels next year, to enable customers to enjoy a seamless transition to the new era of high-capacity bandwidth.

Infinera's new 500Gbit/s PICs each integrate five 100G channels. With Infinera's FlexCoherent technology, the network operator can select the optimal modulation format to use for each route on the network. In this demonstration, the 100Gbit/s channels were transmitted using PM-QPSK modulation and coherent detection to optimize for optical reach. Infinera's 500G PIC receivers use integrated local oscillators to enable coherent detection of the signals. The pair of 500G PICs integrates more than 600 optical devices, a tenfold increase from today's 100Gbit/s PICs which are widely deployed in long-haul and metro networks worldwide.

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