title: Optimal wavelength-space crossbar switches for supercomputer optical interconnects.
abstract: We propose a most economical design of the Optical Shared MemOry Supercomputer Interconnect System (OSMOSIS) all-optical, wavelength-space crossbar switch fabric. It is shown, by analysis and simulation, that the total number of on-off gates required for the proposed N × N switch fabric can scale asymptotically as N ln N if the number of input/output ports N can be factored into a product of small primes. This is of the same order of magnitude as Shannon's lower bound for switch complexity, according to which the minimum number of two-state switches required for the construction of a N × N permutation switch is log2 (N!).
authors.affiliation: Department of Electical & Computer Engineering, University of Patras, Rio 26504, Greece. roudas@ece.upatras.gr
authors.forename: Ioannis
authors.initials: I
authors.lastname: Roudas
authors.forename: B Roe
authors.initials: BR
authors.lastname: Hemenway
authors.forename: Richard R
authors.initials: RR
authors.lastname: Grzybowski
authors.forename: Fotini
authors.initials: F
authors.lastname: Karinou
mesh_terms: D017076:Computer-Aided Design; D003204:Computers, Mainframe; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*