High-speed integrated optical logic based on the protein bacteriorhodopsin

Anna Mathesz, László Fábián, Sándor Valkai, Daniel Alexandre, Paulo V S Marques, P. Ormos, Elmar K. Wolff, A. Dér

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The principle of all-optical logical operations utilizing the unique nonlinear optical properties of a protein was demonstrated by a logic gate constructed from an integrated optical Mach-Zehnder interferometer as a passive structure, covered by a bacteriorhodopsin (bR) adlayer as the active element. Logical operations were based on a reversible change of the refractive index of the bR adlayer over one or both arms of the interferometer. Depending on the operating point of the interferometer, we demonstrated binary and ternary logical modes of operation. Using an ultrafast transition of the bR photocycle (BR-K), we achieved high-speed (nanosecond) logical switching. This is the fastest operation of a protein-based integrated optical logic gate that has been demonstrated so far. The results are expected to have important implications for finding novel, alternative solutions in all-optical data processing research.

Original languageEnglish
Pages (from-to)48-52
Number of pages5
JournalBiosensors and Bioelectronics
Volume46
DOIs
Publication statusPublished - Aug 5 2013

Fingerprint

Bacteriorhodopsins
Logic gates
Interferometers
Proteins
Optical data processing
Mach-Zehnder interferometers
Refractive index
Refractometry
Optical properties
Research

Keywords

  • Bacteriorhodopsin
  • Fast switching
  • Integrated optics
  • Logic gate

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Biotechnology
  • Electrochemistry

Cite this

High-speed integrated optical logic based on the protein bacteriorhodopsin. / Mathesz, Anna; Fábián, László; Valkai, Sándor; Alexandre, Daniel; Marques, Paulo V S; Ormos, P.; Wolff, Elmar K.; Dér, A.

In: Biosensors and Bioelectronics, Vol. 46, 05.08.2013, p. 48-52.

Research output: Contribution to journalArticle

Mathesz, Anna ; Fábián, László ; Valkai, Sándor ; Alexandre, Daniel ; Marques, Paulo V S ; Ormos, P. ; Wolff, Elmar K. ; Dér, A. / High-speed integrated optical logic based on the protein bacteriorhodopsin. In: Biosensors and Bioelectronics. 2013 ; Vol. 46. pp. 48-52.
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