毕业论文：《密集波分复用DWDM在长途干线传输网中的应用》.docVIP

沈阳工程学院毕业论文 精品 - PAGE II - 沈阳工程学院毕业论文 PAGE 1 摘 要 随着人类社会信息技术时代的到来，发展迅速的各种新型业务对通信网的容量提出了更高的要求。面对市场需求增长，现有通信网络规模、传输能力不相适应等多方面的问题，需要从多种方案中找出低成本的解决方法，其中较好的方案是波分复用技术，尤其是其中的密集波分复用技术(DWDM)。DWDM利用现有的光缆资源，使每根光纤上传输更多路信号，极大地提高了通信容量，降低了通信传输系统建设和运行成本，同时为建设全光网络奠定了基础。论文介绍了DWDM技术及其系统器件，对影响DWDM系统的因素进行了讨论；简介沈阳到大连传输系统现状和扩容方案，设计DWDM在沈阳到大连干线传输网中的应用，阐述DWDM在工程中的应用及计算色散值等。DWDM系统充分利用了沈阳到大连已有的光纤带宽资源，使得在未来几年内无需考虑光纤的问题；节省重新敷设光缆的费用，节省再生中继器的费用；建立了一个综合统一的大容量、高速率、高质量、高效的通信传输网络。 关键词 密集波分复用，色散，掺饵光纤放大器 精品 Abstract Along with the arrival of information technology time of the human society, each kind of new rapidly developed service sets a higher request to the capacity of communication transmitting network. Facing to the growth of market demand and the various problems such as the scale and the transmission capacity of the existing communication transmitting network disconformities, we needs to find out the low cost solution from many kinds of the choice that are possible to supply in the plan. The better plan is the WDM technology, and particularly is the dense wavelength division multiplexing (DWDM). The DWDM technology uses resources at present and makes per fiber transmit more signals. So the communication capacity is improved very much and the cost of building and running is decreased. On the other hand, DWDM establishes a foundation to build an entirely optical network. The paper introduces the DWDM technology and parts of system. The factors, which affect the system, are discussed. Brief introduction Shenyang to Dalian transmitting system present condition and a plan of expand capacity, design DWDM technology application in the main line of Shenyang to Dalian transmitting network, elaborate the DWDM technology in the application in the engineering and calculate the value of dispersion. The DWDM system has made full use of fiber sources that have already been in Shenyang to Dalian and it didn’t need to think about fiber sources in future