通过引入光交叉连接oxc，光网络可以通过波长选路为节点对提供端到端的光通道，进而实现波长的重用。

By utilizing equipments like Optical Cross Connect (OXC), WDM network could provide end-to-end light-paths to source-destination node pairs and re-use wavelength resources.

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本文研究了动态业务下，波分复用光传送网的选路和波长分配问题，提出了一种基于备用选路的选路和波长分配算法。

In this paper, an alternate routing algorithm is proposed for the problem of routing and assignment of wavelength in wavelength Division Multiplexing (WDM) optical transport network.

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