Verizon (NYSE: VZ) and NEC have conducted a field trial transmitting 21.7 Tbps over 1,503 kilometers (934 miles) of standard single mode field fiber on the telco's network in the Dallas area.
The findings of the trial were presented their findings at the recent OFC/NFOEC Conference and Expo in Los Angeles.
During the test, the pair used a combination of techniques: increasing modulation levels and reducing optical carrier spacing via superchannels, by which Verizon and NEC increased the total capacity per fiber by over 100 percent versus standard 100G systems.
What's notable about this trial is that it used Verizon's existing fiber. Other service providers could use it as a case study reference as they examine the use of 100G and other advanced optical technologies for their own networks.
This latest demonstration follows a trial Verizon, one of the early aggressive advocates of using 100G on its network, and NEC both conducted last year transmitting 100G, 450G and 1T, coexisting on the same fiber.
- see the release
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