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A Y-branch demultiplexer based on a two-dimensional (2D) photonic crystal (PhC) of GaAs nano-rods arranged in Kagomé lattice is proposed by introducing a Y-branch with two micro-cavities in its branches. The radii r of the rods in the middle of two coupled cavities are 1.17R and 2.1R respectively, helping in designing devices to split light wave with two different wavelengths. The dispersion relations...
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