Opnext, Inc. (NASDAQ:OPXT), a global leader in high speed optical communications technology, and SURFnet, the National Research and Education Network (NREN) in the Netherlands, today 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 1,650km using only erbium doped fiber amplifiers (EDFAs).

To further demonstrate the subsystem’s performance, the embedded fiber link comprised a combination of the relatively high-nonlinear TW+ and TWRS fibers. Furthermore, the circuit was optically looped back in Geneva, thus creating a 3,300km circuit. The looped-back 3,300km link operated error-free for more than 23 hours (BER

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