Evaluation on System Outage Probability Due to Temperature Variation and Statistically Distributed Chromatic Dispersion of Optical Fiber

LambdaXtreme® transport system: R&D of a high capacity system for low cost, ultra long haul DWDM transport

“…First, note that the dispersion tolerance for 40 Gb/s channels is generally less than ±60 ps/nm and the typical RDPS variation across the band typically exceeds 25 ps/nm per span. Secondly, 40 Gb/s transmission exceeding 2000 km requires dynamic dispersion compensation to track thermally-induced variations in the dispersion coefficients [17].…”

Impact of DCF properties on system design

“…Temperature fluctuations of optical fibers can lead to changes in dispersion [113][114][115][116][117], which may occur on at least two time scales: a few hours, typically showing diurnal periodicity, or a few months, showing seasonal periodicity [117,118].…”

“…18 and 17 for 10 Gb/s), the impact of temperature-dependent dispersion fluctuations is more severe for systems operating in the nonlinear transmission regime. Such dispersion variations with temperature, along with the dispersion uncertainty of transmission fiber and the granularity of DCFs may result in significant BER degradations [117].…”

“…As mentioned in Sec. 3.2, 40-Gb/s systems impose stringent dispersion requirements that often necessitate TDC at the receiver to accommodate net residual dispersion variations, especially those produced by temperature fluctuations in optical fibers [113][114][115][116][117].…”

Transmission Fiber Chromatic Dispersion Dependence on Temperature: Implications on 40 Gb/s Performance

“…Even buried optical cables are subject to seasonal temperature variations larger than 40ºC [2], which combined with the long link extensions is responsible for a high value of the fluctuation of residual chromatic dispersion [3].…”