【作者】 朱进军；

【导师】 张晓光；

【作者基本信息】 北京邮电大学 ， 物理电子学， 2007， 硕士

【摘要】 本论文的资助来源为：国家863计划重点项目“光纤偏振模色散自适应补偿技术”，编号：2001AA122041；国家自然科学基金项目“偏振模色散缓解技术与补偿技术动态结合的研究”，编号：60577046；北京市教委共建项目“高速光纤通信系统中若干重要技术的研究”，编号：XK100130537。偏振模色散被认为是限制10Gb／s以上光纤通信系统长距离传输的重要因素之一，是目前光纤通信领域的一个研究热点。本论文讨论了偏振模色散基本理论，初步讨论了补偿技术，详细地分析了自适应偏振模色散补偿系统中基于DSP的逻辑控制模块的硬件设计和制作，以及使用控制模块完成的PMD补偿实验和PSO算法的移植，本论文的主要工作包含以下几个方面：一、PMD的基本理论和检测方法·介绍了偏振光和偏振器件的表示方法，以及偏振器件的琼斯传输矩阵；分析了光纤中偏振模色散的起因。·介绍了偏振模色散取样检测方法和信号的提取，重点分析了单偏振态偏振度法，电域频率分量电功率法以及偏振态椭球法的特点和检测方法。二、基于DSP的偏振模色散补偿系统逻辑控制模块硬件设计和制作·介绍了DSP技术基础以及DSP系统设计的一般方法。·分析了现有的PMD补偿系统控制模块的硬件配置和性能，给出了基于DSP的硬件系统的总体设计。·重点设计了基于DSP的逻辑控制模块硬件系统，包括：DSP最小系统设计，A／D采集部分电路设计，D／A控制部分电路设计，并给出了DSP系统的系统资源分配。三、基于DSP的偏振模色散补偿方案与实验·介绍了偏振模色散补偿技术的分类，一阶、二阶偏振模补偿的方案。·重点设计了验证DSP系统性能的光路实验，详细介绍了PSO算法，并结合实验，完成了对PSO算法移植到DSP系统的可行性验证。·详细讨论了使用DSP系统作为逻辑控制模块完成的一阶和二阶PMD补偿实验。并分析了实验结果。更多还原

【Abstract】 The research work in this dissertation is supported by National 863 High Technology Important Project, No. 2001AA122041, "Technologies of Adaptive Compensation for Polarization Mode Dispersion", National Natural Science Foundation of China, No. 60577046, "The research on dynamically combining relaxed technology with compensation technology for Polarization Mode Dispersion Systems", and Corporate Building Project of Beijing Educational Committee No.XK100130537, "The research on some important technologies in high-speed optical fiber communication systems ".Polarization mode dispersion (PMD) is considered to be one of the main obstacles for long-haul optical fiber communication systems with the speed beyond 10Gb/s. Therefore, it has been a hot topic in recent years. The basic theory of PMD and PMD compensation method is discussed in this paper. And we systematically investigate the design and operating system of the logic control unit based on DSP. PMD compensation experiments and the transplant of PSO are completed successfully, using the logic control unit.Above all, the research work in the dissertation is summed up as following:1 The basic theory about PMD and the monitoring techniquesThe expressions about polarization light, the Jones transmission Matrix of polarization device are introduced, and the origin of PMD is discussed.The measurement techniques of PMD is reviewed. And three kinds of PMD monitoring techniques are especially discussed, including Degree of Polarization, DOP ellipsoid and the power of data’s spectral frequency components.2 The design of logic control unit design based on DSP, for PMD compensation systemsThe basis of DSP technology and the general method for DSP system design are introduced.The configuration and capability of the current hardware unit for PMD compensation systems is analyzed and the collectivity scheme for the hardware system which is based on DSP is designed.The hardware system for logic control unit based on DSP is designed concentratively, including the minimum DSP system, A/D acquisition circuit design, D/A control circuit design and so on. And the system resource of DSP system is been taken on.3 The PMD compensation methods and the experiment using the logic control unit based on DSPTechniques to mitigate or to compensate PMD are reviewed and the compensation methods of the first order PMD and the second order PMD is introduced.More efforts are spent on the optical link system experiments for confirming the validity of the logic control unit based on DSP. PSO algorithm is introduced emphasizily. Combining with optical experiments, PSO algorithm is successfully migrated to the DSP system.The first-order and the second-order PMD compesation experiments are successfully completed using the logic control unit based on DSP. The results of the experiments show that the DSP system has the better performance in PMD compensation systems.更多还原