為了克服電子器件的速率瓶頸,以低成本的方式滿足光通信系統(tǒng)容量指數(shù)增長的需求,人們引入了基于光并行的超信道來提高波分復用（WDM）系統(tǒng)的頻譜效率�！俺诺馈敝傅氖菍⒁唤M共同產(chǎn)生、共同傳輸和共同檢測的信道作為一個單一的實體。超信道可以通過使用頻分復用（FDM）、空分復用（SDM）或者FDM和SDM的組合（即混合超信道）來實現(xiàn)。同時,偏振復用（PDM）還可以使每個信道的容量獲得加倍。超信道的產(chǎn)生,既可以使用獨立光源,也可以使用光梳光源。當使用光頻梳來實現(xiàn)頻域波分復用超信道傳輸時,因為光梳產(chǎn)生的信道頻率是穩(wěn)定的,并以一種相關的方式漂移,因此各波分復用信道可以被緊密地排列,只需要信道間保留一個更小的保護頻帶,甚至不需要保護頻帶。當大量獨立的激光源被一個單一的光梳光源代替后,除了可以有效降低硬件復雜度和功耗外,還可以大幅提升光譜效率外。不過由于光梳光源同樣存在激光器相位噪聲,以及光纖非線性的影響,基于光頻梳光源的超同樣需要對載波相位進行準確估計和補償。其中,平均長度是載波相位估計的一個重要參數(shù),需要通過自適應優(yōu)化以提高性能。此外,在光通信系統(tǒng)中,支持DSP功能的數(shù)字相干接收機的日益普及,提高了對降... 

【文章來源】：電子科技大學四川省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：150 頁

【學位級別】：博士

【文章目錄】：
摘要
ABSTRACT
Chapter 1 Introduction
    1.1 Research Background and Significance
    1.2 State of Arts
    1.3 Contents and Innovations of the Thesis
    1.4 Outline of the Thesis
Chapter 2 Theoretical Basics of Coherent Optical Fiber Communication Systems
    2.1 Historical Evolution of Fiber Transport Networks for Optical CommunicationSystems
    2.2 Principles of Coherent Optical Fiber Communication System
        2.2.1 Transmitter
        2.2.2 Fiber Transmission Links
        2.2.3 Receiver
    2.3 Transceiver DSP Algorithms
        2.3.1 Channel Equalization
        2.3.2 Carrier Phase Recovery Algorithms for Single-Carrier and OFDMsystems
    2.4 Conclusion
Chapter 3 Adaptive Joint-Polarization Carrier Phase Estimation in the Presence ofNonlinear Phase Noise
    3.1 Introduction
    3.2 Adaptive Average Length Optimization
    3.3 Adaptive Carrier Phase Tracking Through Elimination of Large Phase NoiseComponents
    3.4 Performance Evaluation of Proposed Adaptive Joint-Polarization Carrier PhaseTracking Techniques
        3.4.1 System Set-up for Simulation
        3.4.2 Performance Evaluation:Laser Linewidth Effects
        3.4.3 Performance Evaluation:Nonlinear Phase Noise Effects
    3.5 Conclusion
Chapter 4 Joint-Channel Carrier Phase Tracking Techniques
    4.1 Introduction
    4.2 Origin, Characterization and Effects of Inter-Channel Differential Phase onJoint-Channel Carrier Phase tracking Performance
    4.3 Design of Master-Slave Carrier Phase Tracking Technique
    4.4 Performance Evaluation of Designed Master-Slave Carrier Phase TrackingTechnique
        4.4.1 System Set-up for Simulation
        4.4.2 Performance Evaluation:Laser Linewidth Effects under LinearDispersive Transmission
        4.4.3 Performance Evaluation:Nonlinear Phase Noise Effects
    4.5 Computational Complexity Comparison between Master Phase Estimator andSlave Phase-Tracker
    4.6 Low Overhead Carrier Phase Noise Estimation for Coherent Multi-band OFDMSystems Enabled by Optical Frequency Combs
        4.6.1 Design of Master-Slave Carrier Phase Tracking Technique forComb-based OFDM Systems
        4.6.2 Performance Evaluation:Laser Linewidth and Nonlinear Phase NoiseEffects
    4.7 Conclusion
Chapter 5 Experimental Results
    5.1 Introduction
    5.2 Experiment Set-up
    5.3 Characteristics of Phase noise
    5.4 Performance evaluation
    5.5 Conclusion
Chapter 6 Conclusions
    6.1 Concluding Remarks
    6.2 Future Work
Acknowledgements
References
Research Results Obtained During the Study for PhD Degree
Other publications by the author but not included in this thesis



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