Scalable Network Architectures Using the Optical Transpose Interconnection System (OTIS)

Francis Zane, Philippe Marchand, Ramamohan Paturi, Sadik Esener

Research output: Contribution to journalArticle

54 Scopus citations


The Optical Transpose Interconnection System (OTIS) proposed by Marsden et al. (Opt. Lett.18, 13 (July 1993), 1083-1085) makes use of free-space optical interconnects to augment an electronic system by adding nonlocal interconnections. In this paper, we show how these connections can be used to implement a large-scale system with a given network topology using small copies of a similar topology. In particular, we show that, using OTIS, an N2 node 4-D mesh can be constructed from N copies of the N-node 2-D mesh, an N2 node hypercube can be constructed from N copies of the N-node hypercube, and an (N2, α2, c/2) expander can be constructed from N copies of an (N, α, c) expanders, all with small slowdown. Finally, we show how this expander construction can be used to build multibutterfly networks in a scalable fashion.

Original languageEnglish (US)
Pages (from-to)521-538
Number of pages18
JournalJournal of Parallel and Distributed Computing
Issue number5
StatePublished - May 1 2000



  • Expander
  • Hypercube
  • Mesh
  • Multibutterfly
  • OTIS
  • Optoelectronics

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence

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