Optical performance monitoring technique using software-based synchronous amplitude histograms

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We propose and demonstrate a simple technique to monitor both the optical signal-to-noise ratio (OSNR) and chromatic dispersion (CD) by using the software-based synchronous amplitude histogram (SAH) analysis. We exploit the software-based synchronization technique to construct SAHs from the asynchronously sampled intensities of the signal. The use of SAHs facilitates the accurate extraction of the monitoring parameters at the center of the symbol. Thus, unlike in the case of using the technique based on the asynchronous amplitude histogram (AAH), this technique is not affected by the transient characteristics of the modulated signals. The performance of the proposed monitoring technique is evaluated experimentally by using 10-Gbaud quadrature phase-shift keying (QPSK) and quadrature amplitude modulation (QAM) signals over wide ranges of OSNR and CD. We also evaluate the robustness of the proposed technique to the signal's transient characteristics.
Publisher
OPTICAL SOC AMER
Issue Date
2014-10
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.22, no.20, pp.24024 - 24033

ISSN
1094-4087
DOI
10.1364/OE.22.024024
URI
http://hdl.handle.net/10203/194520
Appears in Collection
EE-Journal Papers(저널논문)
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