Optical performance monitoring of QPSK data channels by use of neural networks trained with parameters derived from asynchronous constellation diagrams

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We demonstrate a technique for performance monitoring of quadrature phase-shift keying data channels by simultaneously identifying optical signal-to-noise ratio (OSNR), chromatic dispersion (CD), and polarization-mode dispersion (PMD) using neural networks trained with parameters derived from asynchronous constellation diagrams. A correlation coefficient of 0.987 is reported for a set of testing data from a 40 Gbps return-to-zero, quadrature phase-shift keying (RZ-QPSK) system. The root-mean-square (RMS) errors are 0.77 dB for OSNR, 18.71 ps/nm for CD, and 1.17 ps for DGD. (C) 2010 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2010-03
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.18, no.5, pp.4931 - 4938

ISSN
1094-4087
DOI
10.1364/OE.18.004931
URI
http://hdl.handle.net/10203/96637
Appears in Collection
EE-Journal Papers(저널논문)
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