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Verizon and NEC set new high bit-rate over field fiber record

For the second year in a row, Verizon and NEC Corporation of America have completed an industry first by transmitting high bit-rate technologies over field fiber. The latest trial successfully transmitted 21.7 terabits per second (1 terabit...


March 13, 2012  


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For the second year in a row, Verizon and NEC Corporation of America have completed an industry first by transmitting high bit-rate technologies over field fiber. The latest trial successfully transmitted 21.7 terabits per second (1 terabit equals 1,000 gigabits) — the highest capacity to date — under field conditions, the two companies said in a release.

The results of the trial, which was performed earlier this year on 1,503 kilometres of standard single mode field fiber on Verizon’s network in the Dallas area, were outlined in a post-deadline paper presented at the recent OFC/NFOEC Conference and Expo in Los Angeles.

“This joint effort moves the industry toward a better understanding of the technology’s challenges, differentiators and viability because the future will be shaped by what we learn now,” said Ihab Tarazi, vice president of global IP and transport planning and technology for Verizon.

Network carriers are moving to higher and higher capacity rates to stay ahead of growing bandwidth demands from video services, wireless applications, real-time gaming, large-scale data storage and increased IP services, the companies said.

“By increasing modulation levels and reducing optical carrier spacing using superchannels, the total capacity per fiber is increased by more than 100% as compared with the current standard 100 Gbps systems. “Superchannels” are the next evolution of optical technology that combines several optical carriers to create a signal with greater than 100 Gbps capacity. The ability to use current field fiber to carry higher capacity rates enables carriers to avoid the need to deploy new fiber and, as a result, better utilize current network infrastructure.”

In 2011, the two companies successfully transmitted high bit-rate technologies, including 100 Gbps, 450 Gbps and 1 Tbps, coexisting on the same fiber in a joint field trial.