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2011 Sixth International Symposium on Parallel Computing in Electrical Engineering (2011)
Luton, United Kingdom
Apr. 3, 2011 to Apr. 7, 2011
ISBN: 978-0-7695-4397-0
pp: 62-66
In this paper, we present an all-optical network architecture and a routing protocol for it. The coloured sparse optical torus network (CSOT ) consists of an n - n torus for which n = b^2 for some b in {2, 3, 4, . . .}. Processors of the network are deployed at nodes for which (i + j) mod b = 0, where i and j are row and column indices of a node andb is the block size and the number of wavelengths used. The number of processors is P = b3. Routing is based on scheduled transmission of packets and wavelength-division multiplexing. The routing protocol ensures that no electro-optical conversionis needed at the intermediate nodes and all the packets injected into the routing machinery reach their targets without collisions. A work-optimal routing of h-relations is achieved fora reasonable size of h in (P log P).
optical torus, optical communication, PRAM model, h-relation, wavelength-division multiplexing

V. Leppänen and R. T. Honkanen, "Balanced WDM and TDM Routing in Coloured Sparse Optical Tori," 2011 Sixth International Symposium on Parallel Computing in Electrical Engineering(PARELEC), Luton, United Kingdom, 2011, pp. 62-66.
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