Optical computing with nonlinear optics

Research output: Contribution to journalArticle

Abstract

Nonlinear optics is becoming a new thrust in the field of optical computing and signal processing.1-3 Optical nonlinearity makes the device’s transmission intensity dependent, so one can obtain the thresholding needed for logic decisionmaking. Thresholding is essential to digital optical computing, neural nets, and associative memories. GaAs etalons exhibit many of the characteristics desirable for the nonlinear devices including high speed (picosecond) and diode-laser compatability. However, demonstrations of the use of nonlinear decisionmaking for optical computing have used ZnS or ZnSe interference filters. They are slow (millisecond), but they can be used with the visible 514.5-nm output of an argon laser. We have used such filters to demonstrate all-optical logic operations, one-bit addition by symbolic substitution, and recognition of a three-spot pattern in an arbitrary 2x8 array of input beams. The application to associative memories is under study.

Original languageEnglish (US)
Number of pages1
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume813
DOIs
StatePublished - Jan 1 1987

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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