【作者】 何炜；

【导师】 刘德明；

【作者基本信息】 华中科技大学 ， 光电信息工程， 2010， 博士

【摘要】 在三网融合的大趋势背景下,无源光网络(Passive Optical Network, PON)技术已成为光纤到户(FTTH)接入方式的首要选择。因此,研究融合多种复用技术的下一代PON网络架构,开发新型成套无源光接入系统设备具有重要意义。本论文在国家“863”计划项目的基础之上,围绕构建混合波分时分复用无源光网络系统进行了深入的分析研究和技术创新,并详细阐述了其网元节点设备的设计与实现。所取得的主要研究成果如下：(1)深入研究了下一代无源光网络技术的发展趋势,在分析比较了两种混合波分时分复用无源光网络结构形态的基础之上,提出了一种融合TDM-PON、DWDM和AOWC三项技术的混合波分时分复用无源光网络系统解决方案,对其进行了网络模拟仿真分析,从理论上验证了设计方案可行性。(2)基于ATCA标准设计了OLT硬件架构,提出了一种简单高效的分布式处理器方案,隔离管理和数据通道,使管理平面和数据平面独立运行,减轻了主处理器工作负荷,提升了系统稳定性。(3)采用分层设计方法构建了OLT软件架构,分离了硬件驱动、业务协议配置和管理应用三部分功能,使系统软件可维护、可扩展和可移植,有效提升了系统可靠性。(4)在ODN设计中,基于SOA的增益饱和特性和交叉增益调制效应,创新性的提出采用双SOA结构构造全光波长转换模块,将系统下行波长信号光替代特定波长激光器用作交叉增益调制中的探测光,实现AOWC模块的“光无源”和系统上、下行信号光同波长。(5)研制出了混合波分时分复用无源光网络接入系统工程样机,设计了有效的功能和性能测试方案并进行大量测试及改进,系统各项指标均满足设计要求。更多还原

【Abstract】 Under the background of triple play, passive optical network technology has become the best choice for realizing fiber to the home. Therefore, conducts the innovative research on the next generation PON architecture integrated with a variety of multiplexing technologies, and develops the new complete sets of passive optical access equipment, has the important meaning. The research in this dissertation was supported by the national "863" program, launched a system-depth analysis and technical innovation in hybrid WDM/TDM PON system, and elaborated in detail the system design with realization. The main contents and the creative results of this thesis are as the followings:(1) Based on the research of the next generation PON and the analysis of two types of hybrid WDM/TDM PON system architecture, an innovative solution of optical access network integrated, with TDM-PON, DWDM and AOWC technologies is proposed. Through the simulation analysis of the key technologies in hybrid WDM/TDM PON system, the feasibility of it has been proved in theory.(2) An innovative solution of distributed processing architecture has been used for hardware design of the optical line terminal, sothat the data channel and the management channel can be isolated, the host processor load is reduced and the system stability is improved.(3) A design method of layer planning for software design of the optical line terminal has been introduced. It has a good expansibility, transplantation and maintenance, and the system reliability is improved.(4) Based on the gain saturation characteristic and the cross-gain modulation (XGM) effect of semiconductor optical amplifier (SOA), a creative architecture of AOWC module implemented by using dual SOAs is proposed. Working as the probe signal, the specific wavelength laser is replaced by the system downstream signal. The proposal not only saves the laser source in AOWC module, but also makes the system architecture more efficient and simple.(5) The system design and product realization of the hybrid WDM/TDM passive optical network is described in detail. It contains the system general design, the hardware&software realization of OLT and ONU, and the achitecture design for ODN. The function and performance test of this system has been made and the result shows that it is good for application.更多还原