Progress In Electromagnetics Research M
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By D. Saranya and A. Rajesh

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In this paper, a novel heterogeneous swastika structured hexagonal photonic crystal ring resonator for the realization of universal logic gates is designed using two dimensional photonic crystals. The proposed structure has square lattice of 16 × 16 hexagon-shaped chalcogenide glass rods embedded in an air substrate with a refractive index of 3.1. The choice of chalcogenide in the realization of optical logic gates benefits from wide optical windows in the mid-infrared region. Through plane wave expansion method, the contrast ratio for the proposed structures, namely, NAND, NOR, EX-OR, and EX-NOR gates is 22.6 dB, 17.20 dB, 18.3 dB, and 12.78 dB, respectively. Moreover, the footprint of the proposed structure is 9.24 µm × 9.24 µm.

D. Saranya and A. Rajesh, "Design of Universal Optical Logic Gates Using Heterogeneous Swastika Structured Hexagonal Photonic Crystal Ring Resonator," Progress In Electromagnetics Research M, Vol. 92, 89-101, 2020.

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