Digital non-linear equalization for flexible capacity ultradense WDM channels for metro core networking

Valeria Arlunno (Corresponding author), Xu Zhang, Knud J. Larsen, Darko Zibar, Idelfonso Tafur Monroy

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An experimental demonstration of Ultradense WDM with advanced digital signal processing is presented. The scheme proposed allows the use of independent tunable DFB lasers spaced at 12.5 GHz for ultradense WDM PM-QPSK flexible capacity channels for metro core networking. To allocate extremely closed carriers, we demonstrate that a digital non-linear equalization allow to mitigate inter-channel interference and improve overall system performance in terms of OSNR. Evaluation of the algorithm and comparison with an ultradense WDM system with coherent carriers generated from a single laser are also reported. © 2011 Optical Society of America.
Original languageEnglish
Pages (from-to)B270-B276
Number of pages7
JournalOptics Express
Issue number26
Publication statusPublished - 2011
Externally publishedYes

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