Time-dependent all-optical logic gates based on two coupled waves in bacteriorhodopsin film

Guiying Chen, Chunping Zhang, Zongxia Guo, Xinyu Wang, Jianguo Tian, Q. W. Song

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

When two coherent green beams offset from each other by a small angle are coupled in bacteriorhodopsin film, the diffraction intensity rises from zero to a maximum, and then decreases along with the writing time. Based on the change of the diffraction intensity with the writing time, we proposed and demonstrated a time-dependent all-optical exclusive not or (XNOR) operation and a time-dependent all-optical logical inverter (NOT) operation. Based on the relation between the self-diffraction intensity and the polarization states of the input beams, the time-dependent all-optical XNOR logic gate was achieved, and based on the relation between the polarization states of the diffraction beams and that of the recording beams, the time-dependent all-optical NOT logic gate was obtained.

Original languageEnglish (US)
Article number044504
JournalJournal of Applied Physics
Volume98
Issue number4
DOIs
StatePublished - Aug 15 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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