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Design and optimization of an OR gate all optical circuit based on silicon photonic crystals

Published online by Cambridge University Press:  14 November 2011

R. Bchir ,
A. Bardaoui ,
M. Machhout ,
R. Chtourou  and
H. Ezzaouia
R. Bchir*
Affiliation:
Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95, Hammam-Lif 2050, Tunisia
A. Bardaoui
Affiliation:
Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95, Hammam-Lif 2050, Tunisia
M. Machhout
Affiliation:
Laboratory of Electronic and Microelectronic, Faculty of Sciences of Monastir, Monastir, Tunisia
R. Chtourou
Affiliation:
Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95, Hammam-Lif 2050, Tunisia
H. Ezzaouia
Affiliation:
Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95, Hammam-Lif 2050, Tunisia
*
ae-mail: [email protected]
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Abstract

In this paper we investigate and optimize the design of an OR gate all optical circuit based on silicon photonic crystals. The OR gate is formed by two ring resonators placed between three waveguides, obtained by removing specific rods from the photonic-crystal structure. To optimize the design parameters, the fill factor (r/a), corresponding to the ratio between the rod radius “r”’ and the inter-rod lattice “a’’, was varied using the plane wave expansion method. The Q-factor has been determined to achieve the optimal performance of the ring resonators. The optical properties and the normalized transmission spectra for the proposed gate based on the photonic-crystal ring resonators have been calculated by the finite difference time domain (FDTD) technique. We have noted that the two rings must be symmetric to the central waveguide to obtain the OR gate function in the output.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 56 , Issue 3: Focus on organic electronic devices , December 2011 , 30501
Copyright
© EDP Sciences, 2011

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