文献类型：会议论文

英文题名：Design of Protection Technology in WDM Optical Network

作者：Zhang, Ning[1,2];Bao, Hong[3]

第一作者：Zhang, Ning;张宁

通讯作者：Zhang, N[1]

机构：[1]Beijing Union Univ, Inst Informat Technol, Beijing, Peoples R China;[2]Flinders Univ S Australia, Fac Informat & Engn, Adelaide, SA 5001, Australia;[3]Beijing Union Univ, Sch Informat, Beijing, Peoples R China

第一机构：北京联合大学智慧城市学院

通讯机构：[1]corresponding author), Beijing Union Univ, Inst Informat Technol, Beijing, Peoples R China.|[1141734]北京联合大学智慧城市学院;[11417]北京联合大学;

会议论文集：1st International Conference on Networking and Digital Society

会议日期：MAY 30-31, 2009

会议地点：Guiyang, PEOPLES R CHINA

语种：英文

外文关键词：protection technology; survivability; WDM; optical network

摘要：Protection and survivability are very important problems in optical network. With the rapid development of WDM optical network, protection technology is paid more and more attentions. In this paper, we analyze the protection principle of WDM optical network, propose a protection method for optical network. Protection schemes can be divided into link protection, path protection, and partial path protection schemes. Path protection can be further subdivided into dedicated path protection and shared path protection. In the dedicated path protection schemes, spare capacity is reserved for each individual end-to-end lightpath whilst in the shared path protection schemes, spare capacity is shared among multiple lightpaths, as long as those lightpaths do not fail simultaneously. Lightpaths sharing the same backup resources must be path-disjoint.