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year 27, Issue 1 (Iranian Nano-Photonic Conference 2020 2020)
ICOP & ICPET _ INPC _ ICOFS 2020, 27(1): 31-33 |
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Maleki M J, Jalali Azizpour M R, Soroosh M. Proposal a small structure for all-optical half-adder using the nonlinear defects. ICOP & ICPET _ INPC _ ICOFS 2020; 27 (1) :31-33
URL: http://opsi.ir/article-1-2246-en.html
URL: http://opsi.ir/article-1-2246-en.html
1- Dept. of Electrical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
Abstract: (1525 Views)
In this paper, design, and simulation of a very small structure for all-optical photonic crystal-based half-adder has been done. To achieve the correct operation of the device, two nonlinear defects with the linear refractive index of 1.4, the nonlinear coefficient of 10-14 m2/W, and different radii have been used. So, the distinct incoming signals from the input ports are transferred to output ports SUM and CARRY. With regard to the importance of the integration issue, the area of the proposed structure has been calculated around 28.4 µm2 which is less than the previous works. Concerning the high-speed processing of data, the delay time of the proposed device has been reduced to 0.3 ps compared to the last researches. The difference between the logic levels of 0 and 1 is another critical parameter for photonic crystal-based devices that is obtained 81% in this research. This parameter has also been enhanced in this work compared to previous studies. According to the obtained features, it can be concluded that this research could enhance previous researches. So, one can be optimistic about employing the proposed structure in high-speed processors.
Keywords: Nonlinear optical Kerr effect, Photonic crystal, Photonic bandgap, All-optical half-adder.
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