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Optical Engineering

All-optical logic gates using bacteriorhodopsin films
Author(s): Tianhao Zhang; Chunping Zhang; Guanghua Fu; Yu-Dong Li; Liqun Gu; Guangyin Zhang; Qi Wang Song; Bruce Parsons; Robert R. Birge
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Paper Abstract

We demonstrate all-optical logic gates using bacteriorhodop- sin (bR) film. By studying the transmission of bR film, we advance an all-light-modulated transmission mechanism of bR film: complementary suppression-modulated transmission (CSMT). When a yellow beam (568 nm) and a blue beam (412 nm) illuminate bR film, the two transmitted beams suppress mutually. Based on this mechanism, we design an alloptical operating device in which we implement all 16 kinds of doublevariable binary logic operations. The intensity of an incident yellow or blue beam acts as the input to the logic gate and the transmission bears the output of the gate. We can turn this all-optical device into different states using different wavelengths and different intensity illuminations.

Paper Details

Date Published: 1 February 2000
PDF: 8 pages
Opt. Eng. 39(2) doi: 10.1117/1.602400
Published in: Optical Engineering Volume 39, Issue 2
Show Author Affiliations
Tianhao Zhang, Nankai Univ. (China)
Chunping Zhang, Nankai Univ. (China)
Guanghua Fu, Nankai Univ. (China)
Yu-Dong Li, Nankai Univ. (China)
Liqun Gu, Nankai Univ. (China)
Guangyin Zhang, Nankai Univ. (China)
Qi Wang Song, Syracuse Univ. (United States)
Bruce Parsons, Syracuse Univ. (United States)
Robert R. Birge, Syracuse Univ. (United States)


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