光纤通信传送网承载业务分析(英文).doc

光纤通信传送网承载业务Optical fiber communication transmission network carrying business analysi 摘要:介绍了目前光纤通信传送网的现状，通过介绍自由交换光网络(ASON)的功能及技术特点 ，从承载业务的角度出发，分析了 ASON 网络承载业务的特点 及其发展趋势。SInformation Engineering, WUT, Wuhan 430070, China E-mail:fengg163@163.com Abstract：escribes the current status of Optical Fiber communication transmission network, by introducing the technical features and function of Automatically Switched Optical Network (ASON) ，analyzing the characteristics of ASON network carrying business and its development trend.Key words : Optical Fiber communications, ASON;Abstract CLC Number: TN913 Code: A Introduction 光纤通信由于具有损耗低、传输频带宽容量大、体积小、重量轻、抗电磁干扰、不易串音等优点而备受业内人士的青睐，发展非常迅速。ptical fiber communications has developed rapidly because of low loss ,large transmission band of tolerance, small size, light weight, resistance to electromagnetic interference, crosstalk and other advantages .从SDH（同步数字系列）发展到DWDM（密集波分复用）,超大容量密集波分复用技术的飞速发展使光纤的容量得到了比较彻底的发掘,解决了网络节点间传输容量的问题。 From the SDH (Synchronous Digital Hierarchy ) to the development of DWDM (Dense Wavelength Division Multiplexing), large-capacity dense wavelength division multiplexing technology which enable the rapid development of the capacity of optical fiber has been more thoroughly explore and solve network problems transmission capacity between nodes.但是网络节点瓶颈的问题依然很突出。 However, the network node bottlenecks still very prominent. 随着各种光传送网技术的商用，各大运营商都在探讨光传送网技术的引入问题。With the commercialization of a variety of optical transport network technology, many major carriers are exploring the introduction of optical transport network technology issues. The carrying business analysis is presented based on ASON transport networks from the perspective of carrying business and the characteristics of ASON transport networks. 2?光纤传送网技术Optical Transport Network Technology 在近 30 年的发展过程中，国内单波传输设备由 20 世纪 70 年代的 PDH 发展到 90 年代的 SDH ， 2001 后又推出了 MSTP 的产品，以适应城域网 IP 业务的发展。In the process of development nearly 30 years, the dom