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应用科学学报 ›› 2001, Vol. 19 ›› Issue (3): 193-197.

• 论文 • 上一篇    下一篇

双向WDM星形单跳网双星波长重用扩容

甘朝钦, 孙小菡, 张明德   

  1. 东南大学电子工程系, 江苏南京 210096
  • 收稿日期:2000-06-18 修回日期:2000-09-12 出版日期:2001-09-30 发布日期:2001-09-30
  • 作者简介:甘朝钦(1963-),男,江西奉新人,博士生;孙小菡(1955-),女,安徽合肥人,教授,博导;张明德(1939-),男,上海人,教授,博导.

Enlarging the Capacities of Bidirectional WDM Star Single-hop Networks by Wavelength Reuse

GAN Chao-qin, SUN Xiao-han, ZHANG Ming-de   

  1. Department of Electronic Engineering, Southeast University, Nanjing 210096, China
  • Received:2000-06-18 Revised:2000-09-12 Online:2001-09-30 Published:2001-09-30

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摘要： 针对可利用的有限波长数对双向WDM星形单跳网网络容量限制问题,提出了一种波长重用的网络扩容方案.该方案结构简单,易于实施;通过波长重用,可扩大网络的节点数——网络容量;在网络节点数不变时,则可减少网络节点的排队时延,增加网络的吞吐量,改善网络的性能;此外,它还可用于双向WDM星形单跳网的网间互连.首先论述波长重用的双向WDM星形单跳网的结构,接着分析网络的波长重用特性,进而对网络结构中所要求的光放大器增益和输出功率进行了计算,最后计算了网络的最大信道波长数和最大节点数.

关键词: 星形单跳网, 波分复用, 波长重用, 网络容量, 增益

Abstract: To cope with the restriction placed on the capacities of bidirectional WDM star single-hop networks by the limited number of wavelengths, a scheme of wavelength reuse is proposed in this paper. Though the network structure proposed is simple, the scheme can be easy implemented in practice. In the scheme, the number of nodes can be increased by reusing wavelengths, the delay of network can be reduced, the throughput can be increased under the same number of nodes, and the properties of network are improved. Besides, the scheme can be applied to interconnections between two bidirectional WDM star single-hop networks. In this paper, the network's structure is discussed and the properties of wavelength reuse in the network are analyzed. Furthermore, the required gain and output power of optical amplifier in it are computed. Finally, the maximum number of wavelengths utilized by the network and the maximum number of nodes supported by the network are computed.

Key words: star single-hop network, wavelength division multiplexing, network capacities, gains, wavelength reuse

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