【摘要】 使用光纤延迟线(FDL)是构造全光缓存器的基本手段.但在当前提出的全光缓存器设计中,FDL利用率即缓存容量与所使用的FDL总长度之比是相当低的(通常为2/N,其中N为输入端口数).为了解决这个问题,提出了两种新的FDL组织形式:线性结构和树状结构,用于代替传统设计方法中功能相同的FDL模块.这种方法可以应用在多种光缓存器设计中,将FDL利用率提升至一个与N无关的常量或是1/log2N,节省效果是十分显著的.更多还原

【Abstract】 Most optical packet buffers are constructed with FDLs（Fiber Delay Lines）. However, the FDL efficiency, i.e. the ratio of total FDL length to buffer depth is rather low in current optical buffer designs （normally 2/N,where Nis the number of input port）. In this paper, two novel FDL structures, linear structure and tree structure, are proposed to substitute equivalent while wasteful FDL modules. The substitution can be made in many optical buffer designs and improve the FDL efficiency to a constant value or 1/log₂ N,resulting in significant FDL economizing.更多还原