A WDM Oriented Switching Architecture

这个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架构。目前提出的高速“光”交换机的一些主要缺点是需要快速可调谐的发射器或接收器，需要快速控制以解决争用问题和收发协调。另外，基于使用固定发射器和接收器的当前架构（如Shuffle）只能在同构流量模式下产生良好的性能，并且不能顺利地适应组件故障。所提出的解决方案的原理是使用波长或频率路由，以某种方式交换这些技术的高带宽，以简化处理和硬件交换要求。该方案将时间导向控制与波分复用（WDM）技术相结合，克服了上述限制。为期一年的工作目标将是探索限制WDM/TDM（时分多路复用）操作的主要问题，并提出初步的交换机架构。我们会透过模拟评估建议系统的运作，为评估建议方法的未来潜力提供定量量度。

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.