Time-dependent all-optical logic-gates with bacteriorhodopsin film

G. Y. Chen, Z. X. Guo, K. Chen, C. P. Zhang, J. G. Tian, Q. W. Song

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


In this paper, we proposed time-dependent AND, NOT and ĀB operation based on the relation between input and output intensities of the first-order diffraction beams in degenerate multi-wave coupling. When two coherent green beams are coupled in bacteriorhodopsin (bR) film with a small angle, the intensities of the diffraction beams decrease along with writing time. Based on the phenomenon that the diffraction beams decay along with writing time and the relation between the intensities of input and output beams, we demonstrated the time-dependent optical AND, NOT and ĀB operations.

Original languageEnglish (US)
Pages (from-to)227-231
Number of pages5
Issue number5
StatePublished - Jun 16 2005


  • All optical logic gates
  • Time dependent
  • bR film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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