A WDM Oriented Switching Architecture

拟议的为期一年的项目将探索适用于实现光广域网交换机的高性能体系结构。当前提出的高速“光”开关的一些主要缺点是需要快速可调谐的发射机或接收机，这些发射机或接收机需要用于竞争解决和发射机-接收机协调的快速控制。或者，当前基于使用固定发送器和接收器的体系结构(如在混洗中)仅对同类业务模式产生良好的性能，并且不能平滑地适应组件故障。提出的解决方案的原理是使用波长或频率路由，以牺牲这些技术的高带宽来简化处理和硬件交换要求。该方案将面向时间的控制与波分复用(WDM)相结合，旨在克服上述限制。这项为期一年的工作的目标将是探索制约WDM/TDM(时分复用)操作的主要问题，并提出一个初步的交换体系结构。将通过仿真对所提出的系统的运行情况进行评估，从而为评估所提出的方法的未来潜力提供量化的手段。

The proposed one year project will explore high performance architectures applicable to realizing optical WAN switches. Some of the major drawbacks of currently proposed high speed "optical" switches are the need for rapidly tunable transmitters or receivers requiring fast control for contention resolution and for transmitter-receiver coordination. Alternatively, current architectures based on the use of fixed transmitters and receivers, as in a Shuffle, result in good performance only for homogeneous traffic patterns and do not smoothly adapt to component failures. The principle of the proposed solution is the use of wavelength or frequency routing, in a way which trades the high bandwidth of these technologies for simplifying the processing and hardware switch requirements. the proposed solution integrates time oriented control with wavelength division multiplexing (WDM) targeted to overcome the above limitations. The objective of the one year effort will be to explore the major issues that restrict WDM/TDM (time division multiplexing) operations and propose a preliminary switch architecture. The operation of the proposed system will be evaluated through simulation to provide a quantitative measure for evaluating the future potential of the proposed approach.