publication . Article . 2011

Nonlinear penalties in long-haul optical networks employing dynamic transponders

Rafique, Danish; Ellis, Andrew D.;
Open Access English
  • Published: 09 May 2011
  • Country: United Kingdom
We report for the first time, the impact of cross phase modulation in WDM optical transport networks employing dynamic 28 Gbaud PM-mQAM transponders (m = 4, 16, 64, 256). We demonstrate that if the order of QAM is adjusted to maximize the capacity of a given route, there may be a significant degradation in the transmission performance of existing traffic for a given dynamic network architecture. We further report that such degradations are correlated to the accumulated peak-to-average power ratio of the added traffic along a given path, and that managing this ratio through pre-distortion reduces the impact of adjusting the constellation size of neighboring chann...
Funded by
SFI| Photonics System Research
  • Funder: Science Foundation Ireland (SFI)
  • Project Code: 06/IN/I969
  • Funding stream: SFI Principal Investigator Programme (PI)

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