System and Device Research In All-Optical Wavelength-Routed Switching Networks

9318446昌Hasnain我们提出了一种新的全光，自路由交换网络的基础上创新的地址编码方案。 拟议的工作包括网络、系统和设备层面的协同研究工作。 “全光”交换是通过用由波长的串行组合组成的地址码标记数据包来实现的，使得交换可以简单地通过感测波长来完成，而不需要首先将高速数据转换为电子形式。 通过感测数据包中的地址标签的波长内容来执行自路由。 在多级交换网络的每个交换级，交换节点执行锁存功能，该锁存功能根据波长地址码的某个部分将分组的全部内容引导到适当的输出端口，直到到达最终目的地。 在这种方案下，可以容纳大量的地址码，而不像在传统的波分复用网络中那样受可用波长数的限制。 建议的工作包括调查一个合适的多波长激光发射器的基础上表面发射激光器阵列，一个交换节点，它的分类和路由输入光信号到适当的输出端口的输入信号的波长标签的基础上，光交叉开关是基于开关半导体放大器阵列，和系统/这种类型的全光自路由网络的架构研究。 一个小规模的示范网络计划使用上述新的组件，它作为一个试验台，用于调查系统相关的问题，以及确定在真实的交通环境下的相互作用的设备和组件的性能。 ***

9318446 Chang-Hasnain We propose a novel all-optical, self-routing switching network based on an innovative address coding scheme. The proposed work includes concerted research efforts at the network, systems and device levels. "All-optical" switching is accomplished by tagging the data packet with an address code consisting of a serial combination of wavelengths, so that switching can be done simply by sensing the wavelength without the need for first converting the high-speed data to electronic form. Self-routing is exercised by sensing the wavelength content of the address tag in a data packet. At each switching stage of a multistage switching network, the switching node performs a latching function which directs the entire content of the packet to the appropriate output port based on a certain section of the wavelength address code, until the final destination is reached. Under this scheme, a large number of address codes can be accommodated and is not limited by the number of available wavelengths as in conventional wavelength division multiplexed networks. The proposed work consists of investigation of a suitable multiwavelength laser transmitter based on surface emitting laser arrays, a switching node which sorts and routes incoming optical signals to appropriate output ports based on the wavelength tag of the input signal, optical crossbar switches which are based on switched semiconductor amplifier arrays, and system/architectural studies of this type of all-optical self-routing network. A small-scale demonstration network is planned which uses the novel components described above, which serves as a testbed for investigating systems related issues as well as ascertaining the performance of the interacting devices and components under real traffic environments. ***