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Proceedings Paper

All-optical logical gates built on optically linear bandgap structures covered with nonlinear material
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Paper Abstract

In our work, we investigate photonic bandgap (PBG) structures coated by nonlinear covering as systems that are of interest for possible applications in the all-optical adders and logical gates. Two principal schemes of an all-optical adder based on the 1D PBG materials containing optically nonlinear layers are discussed. It is shown that the only nonlinear layer covering linear photonic crystal gives effective signal control and signal processing. Theoretical estimations of the adder cell parameters are made for Si/SiO2 photonic crystals covered with layers made from nonlinear doped glasses. The calculated angular-frequency diagrams exhibited extremely sensitive areas inside the total reflection range, where the weak nonlinearity leads to dramatic change in light reflection and transmission.

Paper Details

Date Published: 5 March 2008
PDF: 10 pages
Proc. SPIE 7009, Second International Conference on Advanced Optoelectronics and Lasers, 70091Q (5 March 2008); doi: 10.1117/12.795367
Show Author Affiliations
Eugene Ya. Glushko, V. Lashkarev Institute of Semiconductor Physics (Ukraine)
A. A. Zakhidov, Univ. of Texas at Dallas (United States)


Published in SPIE Proceedings Vol. 7009:
Second International Conference on Advanced Optoelectronics and Lasers

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