Experimental demonstration of the optical multi-mesh hypercube: Scaleable interconnection network for multiprocessors and multicomputers

Ahmed Louri, Stephen Furlonge, Costas Neocleous

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A prototype of a novel topology for scaleable optical interconnection networks called the optical multimesh hypercube (OMMH) is experimentally demonstrated to as high as a 150-Mbit/s data rate (27 - 1 nonreturn-to-zero pseudo-random data pattern) at a bit error rate of 10-13/link by the use of commercially available devices. OMMH is a scaleable network [Appl. Opt. 33, 7558 (1994); J. Lightwave Technol. 12, 704 (1994)] architecture that combines the positive features of the hypercube (small diameter, connectivity, symmetry, simple routing, and fault tolerance) and the mesh (constant node degree and size scaleability). The optical implementation method is divided into two levels: high-density local connections for the hypercube modules, and high-bit-rate, low-density, long connections for the mesh links connecting the hypercube modules. Free-space imaging systems utilizing vertical-cavity surface-emitting laser (VCSEL) arrays, lenslet arrays, space-invariant holographic techniques, and photodiode arrays are demonstrated for the local connections. Optobus fiber interconnects from Motorola are used for the long-distance connections. The OMMH was optimized to operate at the data rate of Motorola's Optobus (10-bit-wide, VCSEL-based bidirectional data interconnects at 150 Mbits/s). Difficulties encountered included the varying fan-out efficiencies of the different orders of the hologram, misalignment sensitivity of the free-space links, low power (1 mW) of the individual VCSEL's, and noise.

Original languageEnglish (US)
Pages (from-to)6909-6919
Number of pages11
JournalApplied Optics
Volume35
Issue number35
StatePublished - Dec 10 1996

Fingerprint

Hypercube networks
Interconnection networks (circuit switching)
Surface emitting lasers
mesh
Demonstrations
surface emitting lasers
modules
fault tolerance
cavities
Optical interconnects
laser arrays
Holograms
bit error rate
Fiber optic networks
Fault tolerance
Photodiodes
fans
misalignment
Imaging systems
Bit error rate

Keywords

  • Hypercube
  • Interconnection network
  • Mesh
  • Optical interconnects
  • Parallel computing
  • Scaleability
  • VCSEL's

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Experimental demonstration of the optical multi-mesh hypercube : Scaleable interconnection network for multiprocessors and multicomputers. / Louri, Ahmed; Furlonge, Stephen; Neocleous, Costas.

In: Applied Optics, Vol. 35, No. 35, 10.12.1996, p. 6909-6919.

Research output: Contribution to journalArticle

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