Database filter: Optoelectronic design and implementation

R. D. Snyder, S. A. Feld, P. J. Stanko, E. M. Hayes, G. Y. Robinson, C. W. Wilmsen, K. M. Geib, K. D. Choquette

Research output: Contribution to journalArticlepeer-review


The results of a successful demonstration of the selection module of an optoelectronic parallel-processing database filter is presented. The module utilizes 4×4 arrays of AND and XOR logic gates that respectively perform the functions of reducing the data fields and determining a match between the input data and a selection argument. The logic arrays were fabricated with InGaP/GaAs heterojunction phototransistors that drive vertical-cavity surface-emitting lasers (VCSEL‘s). The VCSEL‘s provide the free-space optical interconnection between stages. The design of the system and the optical power budget are discussed.

Original languageEnglish (US)
Pages (from-to)4881-4889
Number of pages9
JournalApplied Optics
Issue number20
StatePublished - Jul 10 1997
Externally publishedYes


  • Optical computing
  • Optoelectronic logic gates
  • Smart pixel arrays
  • Vertical-cavity surface-emitting laser

ASJC Scopus subject areas

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


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