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混合光波长转换在波分复用光网络中的应用 被引量:4

Utilization of Hybrid Optical Wavelength Conversion in Wavelength Division Multiplexing Optical Networks
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摘要 在全光网络中 ,如何合理利用波长转换来降低光网络的阻塞率是一个非常关键的问题。研究了最新的波长转换体系结构和波长转换手段 ,提出一种全新的混合波长转换方法 ,在减少网络中波长转换器个数的同时 ,维持拥塞概率类似于全波长转换。提出了 5种不同的波长转换器使用策略 ,并利用数值模拟的方法 ,比较了这 5种不同的波长转换器使用策略 ,分析结果 ,得出了最小化光网络的阻塞概率的波长转换使用策略。结合混合波长转换和波长转换器使用策略 ,进一步提出了光网络中优化波长转换器配置的遗传算法 ,通过对 14个节点的美国自然科学基金网 (NSFNet)的数值模拟 ,结果表明它是十分有效的 ,在减少光网络中波长转换器数量 ,且不增加光网络波长数量的情况下 。 How to utilize wavelength conversion is the key factor in improving the blocking performance in wavelength routed all optical networks. The paper studies the novel conversion wavelength architectures and methods, and proposes a hybrid wavelength conversions, which can reduce the number of wavelength converters and preserve the performance. The paper examined five different wavelength converter utilization schemes and presented the best wavelength converter utilization strategy with simulation. Considering hybrid wavelength conversion and wavelength converter utilization strategy, a scheme of optimal wavelength converter placement in optical networks is presented by genetic algorithm and the simulation results demonstrate that it can hold the network performance and need not increase the number of wavelength.
出处 《中国激光》 EI CAS CSCD 北大核心 2004年第8期963-966,共4页 Chinese Journal of Lasers
基金 武汉市科技攻关项目 (No.2 0 0 2 10 0 5 130 0 4 )资助课题
关键词 光通信 波分复用光网络 选路与波长分配 混合光波长转换 遗传算法 optical communication wavelength division multiplexing optical network routing and wavelength assignment hybrid optical wavelength conversion genetic algorithm
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参考文献7

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二级参考文献17

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