光纤网中可变波长光交换机的优化设计

Optimal Design of Wavelength-Convertible Optical Switch for Optical Networks

为了解决光波转换器成本昂贵与其在光纤网络中的重要性之间的矛盾,提出了新的可变波长光交换机结构和相应的优化路由及波长分配算法.为了验证该可变波长光交换机的优越性,基于NSF网络进行了仿真,并给出了最有效的光波转换器的使用方法及其配置.该光交换机设计结构和仿真工具,可以方便地应用到其它骨干光网络中各个交换节点的最优化设计中.

In order to resolve the contradiction between the high cost of wavelength converters and their critical roles in optical networks, a new architecture of wavelength-convertible switches was put forward, and its optimal routing and wavelength assignment algorithm was proposed. Simulations were done on the NSF network to justify the advantages of the proposed architecture. Moreover, the optimal number of wavelength converters and their correct arrangement at switching nodes were obtained through the simulations. The proposed switch architecture along with the simulation tool can be effectively applied to other long-haul optical networks.