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Title
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All‑optical OR, NOT and XOR gates based on linear photonic crystal with high port‑to‑port isolation
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Type
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JournalPaper
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Keywords
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logic gates, quite linear, leakage signal, reflection, faster response
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Abstract
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This paper presents new structures for OR, NOT, and XOR logic gates based on a two-dimensional photonic crystal. The proposed structures are quite linear and have the same basic structure for all three gates. Isolation between input ports is one of the features that is given special attention in this study. The proposed designs reduce the leakage signal from an input port to another input port to less than 17%. The reflection to the input port is less than 30% in the worst case. The structures are designed and simulated, and then their characteristics are compared to previous works. The simulation results show that the proposed structures, despite being linear, have a smaller size, faster response time, and acceptable contrast ratio in comparison to those of the other works. The results of the tolerance study demonstrate that manufacturing tolerance must be less than 5% for the proposed gates’ working properly.
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Researchers
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Habibollah Adarang (Fourth Researcher), Seyed Saleh Ghoreishi (Third Researcher), Reza Yousefi (Second Researcher), Sara Esmaeil Kordi (First Researcher)
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