光分组交换网络中光缓存技术的研究-光学专业论文.docxVIP

摘要捅姜 摘要 捅姜 光分组交换网是全光网络发展的必然趋势。目前，光分组交换网络发展的瓶 颈是光缓存技术。本文系统的阐述了光纤通信以及光通信网络的发展概况，介绍 了波分复用技术和该技术在未来全光网络中的应用；光分组交换网络的结构和节 点；节点的关键技术和光分组的帧格式。重点研究了光缓存技术，对光缓存技术 进行了深入的分析和归纳，对每一种光缓存的优缺点都进行了细致的分析，给出 光分组交换网络中冲突的解决方案。最后设计出一个光分组交换网络的节点，并 且对该节点迸行了实验仿真。 本文在研究光缓存技术的基础上，设计出具有光缓存能力的光分组交换网络 的节点。给出该节点的控制算法，依据此算法对该节点的性能进行了实验仿真，开 发出了该节点的通用仿真程序。并对此仿真结果进行了解释。 在实际应用中，可以根据仿真结果来确定所要设计网络节点的端口数和每根 光纤的波长数，以便实现最高性价比。 关键词 光缓存 光纤延迟线 控制算法 分组丢弃率 分组平均延迟 AbstractAbstract Abstract Abstract The optical packet switching network is the necessary tendency in the development ofall optical network．At the present time．the bottleneck in the optical packet switching network is the optical buffer technology．The development situation of the fiber communication and optical communication network were expatiated systematically in this paper．It was introduced that the wavelength division multiplex technology and its application in intending all optical network,the structure and node ofthe optical packet switching network，the key technologyoof the node and the frame format of the optical packet．The study on optical buffer technology was emphasized in the paper．And it was analyzed and generalized profoundly．The merits and faults of each optical buffer technology were analyzed in detail．And the solution t0 conflict in the optical packet switching network WaS offered．In addition,a node of the optical packet switching network was designed and emulated experimentally． Based On the research ofoptical buffer technology,the node with the ability ofthe optical buffer was designed in the optical packet switching network。And the control algorithm of the node Was supplied as well．According to the algorithm，the performance of the node Was emulated in the paper．The general emulator program of the node Was developed and the simulation results were explained． In the practical application,the number of the network nodes port and the number of the wavelength in every fiber to be designed could be determined according to the shnulation r