Self-routing interconnection structures using coincident pulse techniques

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Abstract
We present several optical interconnection structures for multiprocessor applications. In general the communication paradigms used in multiprocessor systems can be classified as either broadcast or or switched point-to-point systems. It has been suggested that it is desirable to additionally support multicasting and simulcasting modes of communication. These modes are not widely implemented in electronics due to the complexity of their implementation. Using a self routing technique called coincident pulse addressing such structures can be realized efficiently in optics. In this paper we address two issues. First we demonstrate that the technique can be implemented with sufficient reliability and scale in technologies which are appropriate for computing applications. Second we discuss the application of these networks to multiprocessor systems. Using linear structures we demonstrate broadcasting multicasting and simulcasting communication networks. By using two dimensional structures we demonstrate multi-port memory access permutation networks and multiple sender versions of the linear networks.

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