Abstract
We propose an asymmetric Y-structure in a 2D photonic crystal consisting of TiO2 rods in air. The structure is then optimized by taking out the rods so as to create defects at different points, to realize optical XOR and OR operations. To verify our proposition, we use FDTD method to simulate the wave propagation inside the proposed asymmetric waveguide. Simulation results showed that, the said optimized design can really act as optical OR and XOR gate.
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