Abstract
In this paper, we present a new design of all-optical logic gates, namely AND, OR, NOR, NAND, XOR, XNOR and NOT logic gates. Our design consists of oriented oval air holes drilled in silicon background arranged in two-dimensional photonic crystals. All optical operations in our design depend on the interference effect, and they are examined using finite-difference time-domain method. Time response for all gates was calculated as well. Numerical results show that the gates satisfy their truth tables at wavelength of 1500 nm. Our design has the advantage that all logic gates could be realized in one configuration with relatively small footprint of 97.2 µm2 which is vital demand for many optical applications.
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Masoud, A.M., Ahmed, I.S., El-Naggar, S.A. et al. Design and simulation of all-optical logic gates based on two-dimensional photonic crystals. J Opt 51, 343–351 (2022). https://doi.org/10.1007/s12596-021-00787-8
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DOI: https://doi.org/10.1007/s12596-021-00787-8