Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5658
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dc.contributorDepartment of Electrical Engineering-
dc.contributorDepartment of Electronic and Information Engineering-
dc.creatorDong, Z-
dc.creatorLau, APT-
dc.creatorLu, C-
dc.date.accessioned2014-12-11T08:22:52Z-
dc.date.available2014-12-11T08:22:52Z-
dc.identifier.urihttp://hdl.handle.net/10397/5658-
dc.language.isoenen_US
dc.publisherOptical Society of Americaen_US
dc.rights© 2012 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-20-17-19520. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.en_US
dc.subjectFiber optic networksen_US
dc.subjectFibersen_US
dc.subjectOptical communicationen_US
dc.subjectPolarizationen_US
dc.subjectQuadrature phase shift keyingen_US
dc.subjectSignal processingen_US
dc.titleOSNR monitoring for QPSK and 16-QAM systems in presence of fiber nonlinearities for digital coherent receiversen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage19520-
dc.identifier.epage19534-
dc.identifier.volume20-
dc.identifier.issue17-
dc.identifier.doi10.1364/OE.20.019520-
dcterms.abstractOSNR monitoring is indispensable for coherent systems to ensure robustreliable network operation and potentially enable impairment-aware routing for future dynamic optical networks. In a longhaul transmission link with chromatic dispersion (CD) and fiber nonlinearityit is difficult to distinguish between amplifier noise and fiber nonlinearity induced distortions from received signal distributions even after various transmission impairment compensation techniquesthus resulting in grossly inaccurate OSNR estimates. Based on the received signal distributions after carrier phase estimation (CPE)we propose to characterize the nonlinearity-induced amplitude noise correlation across neighboring symbols and incorporate such information into error vector magnitude (EVM) calculation to realize fiber nonlinearity-insensitive OSNR monitoring. For a transmission link up to 1600 km and signal launched power up to 2 dBmexperimental results for 112 Gb/s polarization-multiplexed quadrature phase-shift keying (PM-QPSK) demonstrate an OSNR monitoring range of 10-24 dB with a maximum estimation error below 1 dB. For 224 Gb/s PM-16-quadrature amplitude modulation (PM-16-QAM) systemssimulation results demonstrate an OSNR monitoring range of 18-28 dB with a maximum estimation error below 1 dB. Tolerance of the proposed OSNR monitoring technique to different pulse shapestiming phase offsetspolarization dependent loss (PDL)polarization-mode dispersion (PMD) and WDM effects are also investigated through simulations.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationOptical express, 13 Aug. 2012, v. 20, no.17, p. 19520-19534-
dcterms.isPartOfOptical express-
dcterms.issued2012-08-13-
dc.identifier.isiWOS:000307873600104-
dc.identifier.scopus2-s2.0-84865593247-
dc.identifier.pmid23038594-
dc.identifier.eissn1094-4087-
dc.identifier.rosgroupidr62886-
dc.description.ros2012-2013 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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