Optical WDM Networks with Limited Wavelength Conversion

具有有限波长转换的光 WDM 网络

• 批准号: 9612846
• 负责人: Galen Sasaki
• 金额: $ 22.93万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-15 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9612846&HistoricalAwards=false
• 关键词: Optical; WDM; Networks; Limited; Wavelength

An important optical network architecture is the wavelength division multiplexed (WDM) network that supports lightpaths. WDM is basically frequency division multiplexing in the optical frequency range, where carrier frequencies are referred to as wavelengths. Lightpaths are end-to end connections made up of connected WDM channels. A network node is said to have wavelength conversion capability if it can shift the wavelengths of optical signals. The advantage of wavelength conversion is that it allows networks to support more ligthpaths, but its disadvantage is that it can be expensive and/or difficult to implement. This research will investigate limited wavelength conversion that allows network nodes to perform some but not all wavelength shifts. Limited conversion means less complex and costly hardware than full conversion, yet better channel utilization than no conversion. Network architectures and algorithms will be studied by initially focusing on special and important network topologies such as the star and ring, and then eventually covering general network topologies. These will be analytically evaluated by worst case analysis that leads to guaranteed performance results, and also by probabilistic methods. More information on the project can be found at http://spectra.eng.hawaii.edu/~sasaki/NSF/limited.html

一种重要的光网络架构是支持光路的波分复用（WDM）网络。 WDM基本上是光频率范围内的频分复用，其中载波频率被称为波长。 光路是由连接的WDM通道组成的端到端连接。 如果网络节点能够移动光信号的波长，则该网络节点被称为具有波长转换能力。 波长转换的优点是它允许网络支持更多的光路，但它的缺点是它可能是昂贵的和/或难以实现。 这项研究将调查有限的波长转换，允许网络节点执行一些，但不是所有的波长移位。 有限转换意味着比完全转换更简单和更昂贵的硬件，但比没有转换更好的通道利用率。 网络架构和算法将首先集中在特殊和重要的网络拓扑结构，如星星和环，然后最终覆盖一般的网络拓扑结构进行研究。 这些将通过最差情况分析进行分析评估，以保证性能结果，并通过概率方法进行分析。有关该项目的更多信息，请访问 http://spectra.eng.hawaii.edu/~sasaki/NSF/limited.html