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Opnext demos ‘record-breaking’ transmission distance test

Opnext Inc., a high-speed optical communications technology vendor, and SURFnet, the National Research and Education Network (NREN) in the Netherlands, have announced a successful 100Gbps coherent field trial between the National Supercomputing...


July 12, 2012  


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Opnext Inc., a high-speed optical communications technology vendor, and SURFnet, the National Research and Education Network (NREN) in the Netherlands, have announced a successful 100Gbps coherent field trial between the National Supercomputing Center, SARA, in Amsterdam and CERN (Conseil Européen pour la Recherche Nucléaire — European Organization for Nuclear Research)in Geneva. Opnext used its OTS-100FLX 100Gbps digital coherent subsystem for the field trial, utilizing next-generation 100Gbps single carrier technology and soft decision forward error correction (SD-FEC) to optically link Amsterdam to Geneva with a transmission distance of 1,650 kilometres.

“The circuit was optically looped back in Geneva, thus creating a 3,300 kilometre circuit,” the two organizations said in a release. “The looped-back link operated error-free for more than 23 hours over the entire C-band and over a range of launch powers, highlighting the true upgrade potential of this link to 8Tbps in the future using 100Gbps coherent transponders.”

The Opnext subsystem consists of a suite of OTS-100FLX 100Gbps flexponder line cards and a newly released OTS-mini ETSI shelf with a 4RU small form factor.