Space-time switching in fiber optic packet-switched networks

Aruna V. Ramanan; Harry F. Jordan; Jon R. Sauer

doi:10.1117/12.161327

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1 November 1993 Space-time switching in fiber optic packet-switched networks

Aruna V. Ramanan; Harry F. Jordan; Jon R. Sauer

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Proceedings Volume 2024, Multigigabit Fiber Communication Systems; (1993) https://doi.org/10.1117/12.161327
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

While fiber optic packet switched networks can make use of the advantages provided by optics for transmission of messages, it is not possible to provide an efficient storage mechanism at intermediate nodes for data that remains in optical format. Hence, it is necessary to avoid conversion to electronic format for temporary storage at intermediate nodes when they face output port contention. As a result, in order to maintain fast packet switching, optical packets must be continuously moved until they reach their destination. In such bufferless networks, if two or more packets coming into a node simultaneously request the same output port, one of the requests can be satisfied and the others must be sent out through other available ports. The addition of time switching, to the usual space switching using this deflection routing technique, allows temporal reordering of packets so as to reduce the contention for spatial channels. In this paper we present the performance enhancement due to space-time switching in bufferless packet switched networks.

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Aruna V. Ramanan, Harry F. Jordan, and Jon R. Sauer "Space-time switching in fiber optic packet-switched networks", Proc. SPIE 2024, Multigigabit Fiber Communication Systems, (1 November 1993); https://doi.org/10.1117/12.161327

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