Sunnyvale, CA--Optical communications systems company Infinera (NASDAQ: INFN) released a paper in the IEEE Journal of Lightwave Technology and Verizon report a record-breaking achievement for real-time polarization mode dispersion (PMD) performance using Infinera's coherent optical transmission system based on 500 Gigabit per second (Gbps or Gb/s) photonic integrated circuits (PICs).
By surmounting the problems of PMD, the companies say that coherent transmission promises to enable higher communication rates without penalty from this common fiber impairment. In the paper, Infinera and Verizon report on the real-time PMD tolerance measurement results of Infinera's coherent transmission technology. Taking advantage of the advanced signal processing built into the modem, performance was analyzed for both first-order and second-order PMD. Moreover, the combination of high amounts of PMD and fast polarization transients were tracked with what Infinera says was 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 Gb/s PIC," said Dave Welch, Infinera co-founder, executive VP, and chief strategy officer. "System vendors in the industry today are having a difficult time achieving this. Not all coherent systems are the same. 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."
SOURCE: Infinera; www.infinera.com/j7/servlet/NewsItem?newsItemID=317