Performance analysis of multi-fiber all-optical switches employing fixed-input/tunable-output wavelength converters

V. Eramo, A. Germoni, C. Raffaelli, M. Savi
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引用次数: 3

Abstract

A Multi-fiber all-optical switch which employs wavelength converters with fixed input wavelength is presented. Being the converters tuned over a fixed input wavelength, each one is shared by channels on the same wavelength, so the resulting architecture is called shared-per-wavelength. Here the space switching matrices are simpler with respect to similar switching architectures proposed in the past (i.e. shared-per-node ones) leading to easier and less costly implementation. Moreover, fixed- input/tunable-output converters are expected to be less costly than tunable-input/tunable-output ones. A scheduling algorithm to forward optical packets in synchronous scenario and an analytical model to evaluate performance of the shared-per- wavelength architecture are presented. The analytical model is validated against simulation and the results show good accuracy in most cases of interest for optical switch design.
采用固定输入/可调输出波长转换器的多光纤全光交换机的性能分析
提出了一种采用固定输入波长的波长转换器的多光纤全光开关。由于转换器在固定的输入波长上调谐,因此每个转换器由同一波长上的通道共享,因此所得到的架构称为每个波长共享。这里的空间交换矩阵相对于过去提出的类似交换体系结构(即每个节点共享的交换体系结构)更简单,从而更容易实现,成本更低。此外,固定输入/可调谐输出变换器比可调谐输入/可调谐输出变换器成本更低。提出了一种同步场景下的光分组转发调度算法,并给出了一种评估每波长共享架构性能的分析模型。通过仿真验证了分析模型的正确性,结果表明该模型在光开关设计中具有较高的精度。
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