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

Valeria Arlunno | Zendy; Xu Zhang | Zendy; Knud J. Larsen | Zendy; Darko Zibar | Zendy; Idelfonso Tafur Monroy | Zendy

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

Author(s) -

Valeria Arlunno,

Xu Zhang,

Knud J. Larsen,

Darko Zibar,

Idelfonso Tafur Monroy

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.00b270

Subject(s) - wavelength division multiplexing , computer science , equalization (audio) , channel (broadcasting) , interference (communication) , channel spacing , electronic engineering , modulation (music) , telecommunications , optics , computer network , physics , engineering , wavelength , acoustics

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.

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