Demonstration of record sensitivity in an optically pre-amplified receiver by combining PDM-QPSK and 16-PPM with pilot-assisted digital coherent detection
{"title":"Demonstration of record sensitivity in an optically pre-amplified receiver by combining PDM-QPSK and 16-PPM with pilot-assisted digital coherent detection","authors":"Xiang Liu, T. Wood, R. Tkach, S. Chandrasekhar","doi":"10.1364/OFC.2011.PDPB1","DOIUrl":null,"url":null,"abstract":"We propose a power-efficient modulation/detection scheme that combines PDM-QPSK and 16-ary-pulse-position-modulation. A record sensitivity of 3.5 photons per bit at BER=10−3 is experimentally demonstrated at 2.5 Gb/s with digital coherent-detection, outperforming PDM-QPSK by >3 dB.","PeriodicalId":6373,"journal":{"name":"2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference","volume":"26 1","pages":"1-3"},"PeriodicalIF":0.0000,"publicationDate":"2011-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"43","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/OFC.2011.PDPB1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 43
Abstract
We propose a power-efficient modulation/detection scheme that combines PDM-QPSK and 16-ary-pulse-position-modulation. A record sensitivity of 3.5 photons per bit at BER=10−3 is experimentally demonstrated at 2.5 Gb/s with digital coherent-detection, outperforming PDM-QPSK by >3 dB.
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