Optical waveguides – With optical coupler – Particular coupling structure
Patent
1992-12-18
1995-05-09
Bowler, Alyssa H.
Optical waveguides
With optical coupler
Particular coupling structure
395200, 395800, 385 17, 385 18, 385 24, 364DIG1, G06F 1300
Patent
active
054148197
ABSTRACT:
An interconnection network for interconnection in parallel of a large number (N) of processing elements (PE). The network includes three serial switching stages. The first stage in which the processing elements arc grouped in r clusters of k processing elements each comprising many small fast electronic switches, one for each cluster. The second stage comprises a large number (N) of optical channels, one for each of the N processing elements. The third stage comprises k photodetectors for each of the clusters and electronic switches of the type in the first stage. Each cluster controls k light sources, one for each channel and k photodetectors in the cluster. Interconnection between processing elements in a common cluster are made solely by way of an electronic switch. Interconnection between processing elements in different clusters is made via the optical channels and one or two of the electronic switches.
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Sakano, Noguchi & Matsumoto "Performances of Lightwave Interconnection Using Spatial Addressing (LISA) & Its Applications for Multiprocessor Systems" Journal of Lightwave Tech. vol. 9 pp. 1733-1741, 1991.
Golshan & Bedi, "Optical Implementation of Clos Network Using Reversible Nonlinear Interface Devices", IEEE Proceedings of 33rd Midweat Symposium on Circuits and Systems, vol. 2. pp. 915-917, 1991.
Redmond Ian
Schenfeld Eugen
Bowler Alyssa H.
Darbe Valerie
Feig Philip J.
NEC Research Institute Inc.
Torsiglieri Arthur J.
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