Infinera, Verizon report real-time PMD performance record

Infinera Corp. (NASDAQ: INFN), in collaboration with Verizon, has published a paper describing what they say is record-breaking performance for real-time polarization mode dispersion (PMD) tolerance. The paper was published earlier this month in the Journal of Lightwave Technology.

Infinera Corp. (NASDAQ: INFN), in collaboration with Verizon, has published a paper describing what they say is record-breaking performance for real-time polarization mode dispersion (PMD) tolerance. The paper was published earlier this month in the Journal of Lightwave Technology.

By surmounting the problems of PMD, coherent transmission promises to enable higher communication rates without penalty from this common fiber impairment. In the published paper, Infinera and Verizon report on the real-time PMD tolerance measurement results using Infinera’s coherent transmission technology based on its 500-Gbps photonic integrated circuit (PIC).

Taking advantage of the advanced signal processing built into the coherent modem, performance was analyzed for both first-order and second-order PMD. Moreover, the combination of high amounts of PMD and fast polarization transients could be tracked with near-perfect precision.

“Our team, with Verizon, was able to demonstrate a coherent optical transmission that can handle large PMD values with our commercially available 500-Gbps PIC,” said Dave Welch, co-founder, executive vice president and chief strategy officer of Infinera. “System vendors in the industry today are having a difficult time achieving this.”

He added, “This paper illustrates the robustness of our optical solution and is a tribute to our brilliant teams here in Sunnyvale and in our Ottawa Design Center, developing the algorithms to make this possible.”

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