Design of robust WDM networks

光网络使用高速宽带光纤的互连来使用光发射器和接收器来传输信息。波分复用(WDM)允许多个通信信道在一根光纤上以不同的载波频率运行。快速增长的WWW关键依赖于快速可靠的通信。WDM网络的日益复杂使得网络发生故障的可能性成为一个非常重要的问题。即使是数据通信的短暂中断也意味着大量数据的丢失。在这次调查中，我们将关注以下关于网络生存性和光网络设计的问题：-在设计网络时，如何确保使用尽可能少的额外资源来处理任何单个故障？-如何设计网络，以便在发生故障时，使用备份路径的通信可以非常快地恢复？-什么是将低速用户通信请求分配给光通信的高速能力的经济方法？

Optical networks use interconnections of high-speed broadband fibers to transmit information using optical transmitters and receivers. Wavelength Division Multiplexing (WDM) allows multiple communicationchannels to operate at different carrier frequencies on a single fiber. The rapidly growing WWW is crucially dependant on fast and reliable communication. The growing complexity of WDM networks makes the possibility of faults in networks a very important problem. Even brief interruption of data communication represents the loss of a huge amount of data.  In this investigation, we will look at the following problems on network survivability and the design of optical networks:- When designing a network, how to ensure that any single fault can be handled using as little additional resources as possible?- How to design networks in such a way that, when a fault occurs, communication using an backup path can be resumed very fast?- What is an economical way to allot low-speed user requests for communication to the high-speed capability of optical communication?