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Journal article

Experimental demonstration of the maximum likelihood-based chromatic dispersion estimator for coherent receivers

By Borkowski, Robert1,2; Johannisson, Pontus3; Wymeersch, Henk3; Arlunno, Valeria1,2; Caballero Jambrina, Antonio1,2; Zibar, Darko1,2; Tafur Monroy, Idelfonso1,2

From

Department of Photonics Engineering, Technical University of Denmark1

Metro-Access and Short Range Systems, Department of Photonics Engineering, Technical University of Denmark2

Chalmers University of Technology3

We perform an experimental investigation of a maximum likelihood-based (ML-based) algorithm for bulk chromatic dispersion estimation for digital coherent receivers operating in uncompensated optical networks. We demonstrate the robustness of the method at low optical signal-to-noise ratio (OSNR) and against differential group delay (DGD) in an experiment involving 112Gbit/s polarization-division multiplexed (PDM) 16-ary quadrature amplitude modulation (16QAM) and quaternary phase-shift keying (QPSK).

Language: English
Year: 2014
Pages: 158-162
ISSN: 10959912 and 10685200
Types: Journal article
DOI: 10.1016/j.yofte.2014.01.009
ORCIDs: Borkowski, Robert , Zibar, Darko and Tafur Monroy, Idelfonso
Keywords

16QAM Chromatic dispersion Digital signal processing Maximum likelihood Optical performance monitoring QPSK

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