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Clock drift-tolerant optical bit pattern monitoring technique in asynchronous undersampling system
Zhang, Huixing1,2; Zhao, Wei1
Department瞬态光学国家重点实验室
2011-10-01
Source PublicationOPTICAL ENGINEERING
ISSN0091-3286
Volume50Issue:10Pages:105008
Contribution Rank1
AbstractBased on an asynchronously undersampling system, we present a novel bit pattern monitoring technique in terms of its performance analysis and the implementation aspects. Relying upon an finite impulse response (FIR) filter assisted fine synchronization of the acquired samples, the technique can significantly reduce the random walk clock drift between data signal and sampling source compared to a conventional fine synchronization using a fixed time step. For the performance analysis of this technique, we first present an intuitive understanding of the principle of the FIR filter method under consideration of the filter frequency response. We find that the frequency response of the FIR filter simply serves to extract the spectral component at the aliasing frequency found in the periodogram and diminish all other frequency components. Then we test the tracking limit and discuss the optimized filter length choice of the new bit pattern monitoring technique through numerical examples. It turns out that the optimal filter length is chosen as the one which minimized the measured jitter and can be found iteratively. Finally, we present an experimental verification of this FIR bit pattern synchronization method by measuring and reconstructing bit patterns of 40 Gb/s nonreturn-to-zero and 160 Gb/s return-to-zero data signals, respectively. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3640828]
SubtypeArticle
KeywordOptical Bit Pattern Monitoring Clock-drift Tolerant Asynchronous Optical Sampling Optical Communications
Subject AreaOptics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1117/1.3640828
URL查看原文
Indexed BySCI ; EI
WOS KeywordEYE-DIAGRAM MEASUREMENT ; WAVE-FORM MEASUREMENT ; CONSTELLATION DIAGRAMS ; FIBER ; SENSITIVITY ; GUIDE
Language英语
WOS Research AreaOptics
WOS SubjectOptics
WOS IDWOS:000296559700029
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/19684
Collection瞬态光学研究室
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Huixing,Zhao, Wei. Clock drift-tolerant optical bit pattern monitoring technique in asynchronous undersampling system[J]. OPTICAL ENGINEERING,2011,50(10):105008.
APA Zhang, Huixing,&Zhao, Wei.(2011).Clock drift-tolerant optical bit pattern monitoring technique in asynchronous undersampling system.OPTICAL ENGINEERING,50(10),105008.
MLA Zhang, Huixing,et al."Clock drift-tolerant optical bit pattern monitoring technique in asynchronous undersampling system".OPTICAL ENGINEERING 50.10(2011):105008.
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