Hierarchical optical ring interconnection (horn): Scalable interconnection network for multiprocessors and multicomputers

Ahmed Louri, Rajdeep Gupta

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


A new interconnection network for massively parallel computing is introduced. This network is called a hierarchal optical ring interconnection (HORN). The HORN consists of a single-hop, scalable, constant-degree, strictly nonblocking, fault-tolerant interconnection topology that uses wavelengthdivision multiple access to provide better utilization of the terahertz bandwidth offered by optics. The proposed optical network integrates the attractive features of hierarchical ring interconnections, e.g., a simple node interface, a constant node degree, better support for the locality of reference, and fault tolerance, with the advantages of optics. The HORN topology is presented, its architectural properties are analyzed, and an optical design methodology for it is described. Furthermore, a brief feasibility study of the HORN is conducted. The study shows that the topology is highly amenable to optical implementation with commercially available optical elements.

Original languageEnglish (US)
Pages (from-to)430-442
Number of pages13
JournalApplied optics
Issue number2
StatePublished - Jan 10 1997


  • Parallel processing
  • Scalable interconnection network
  • Single-hop nonblocking optical interconnection network
  • Wavelengthdivision multiple access

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


Dive into the research topics of 'Hierarchical optical ring interconnection (horn): Scalable interconnection network for multiprocessors and multicomputers'. Together they form a unique fingerprint.

Cite this