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Proceedings Paper

Approach and analysis of contention resolution in optical switching network
Author(s): Xiaolong Yang; Mingrui Dang; Youju Mao; Min Zhang; Lemin Li
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Paper Abstract

As the Internet traffic exponentially growing, the next generation IP network is forced to scale far beyond its present performances. The more and more mature optical switching technology, such as optical burst switching, is expected to provide an ideal infrastructure for meeting the demands. However in optical switching, there is one critical issue, namely contention, which roots from multiple optical data requesting the same output port How to resolve contention in optical domain will have a significant effect on the performance (in terms of the burst-loss rate, average delay time and network throughput) of optical switching network. The paper proposes a contention resolution scheme based on FDL, AWG and TWC. Here FDL is used as two functions, i.e. forwarding and feedback for smaller or longer buffering time requirements respectively. In the paper we incorporate the scheme into the design of optical switch. We descript the optical data buffering strategy when contention occurs. We also study the performance of the scheme in a Markov process model under the assumption of uniform Bernoulli traffic, and validate the analysis through numerical simulation. The computer simulation results show that the scheme can efficiently use FDL buffering and AWG switching capacities, hence can obviously reduce the contentions.

Paper Details

Date Published: 3 September 2002
PDF: 8 pages
Proc. SPIE 4907, Optical Switching and Optical Interconnection II, (3 September 2002); doi: 10.1117/12.482272
Show Author Affiliations
Xiaolong Yang, Univ. of Electronic Science and Technology of China (China)
Mingrui Dang, Chongqing Univ. of Posts and Telecommunications (China)
Youju Mao, Chongqing Univ. of Posts and Telecommunications (China)
Min Zhang, Univ. of Electronic Science and Technology of China (China)
Lemin Li, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 4907:
Optical Switching and Optical Interconnection II
Lih-Yuan Lin; Yimo Zhang; Kimio Oguchi, Editor(s)

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