Shared hardware alternating operation of a super-parallel holographic optical correlator and a super-parallel holographic RAM

Mark Andrews*, M. S. Shahriar, Renu Tripathi, Mohammad Huq, John T. Shen

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

For practical pattern recognition and tracking systems, it is often useful to have a high-speed random access memory (RAM), which complements a holographic correlator. Recently, we have demonstrated a super-parallel holographic optical correlator, which uniquely identifies N images from a database using only 2√N number of detector elements. In this paper, we show how this correlator architecture, operated in reverse, may be used to realize a super-parallel holographic random access memory. We present preliminary results establishing the feasibility of the super-parallel holographic random access memory, and show that essentially the same set of hardware can be operated either as the super-parallel holographic optical correlator or as a super-parallel holographic random access memory, with a minor reorientation of some of the elements in real time. This hybrid device thus eliminates the need for a separate random access memory for a holographic correlator based target recognition and tracking system.

Original languageEnglish (US)
Pages (from-to)52-60
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5362
DOIs
StatePublished - Aug 16 2004
EventAdvanced Optical and Quantum Memories and Computing - San Jose, CA, United States
Duration: Jan 27 2004Jan 28 2004

Keywords

  • Correlator
  • Holography
  • Pattern recognition
  • Random access memory
  • Target tracking

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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