提出了一种基于 Hopfield神经网络新的路由算法 ,它可以实现路由选择和波长分配的全局优化 .用该方案进行路由选择所得到的最小波长数对业务模式具有相对稳定性 ,而且减少了所用波长数目 . A new routing algorithm based on Hopfield neural network is proposed, which can achieve the global optimization of routing and wavelength assignment. The minimum number of wavelengths obtained by this scheme is relatively stable to the service mode, and the wavelength used is reduced Number.