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Four-channel optical demultiplexer based on hexagonal photonic crystal ring resonators

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In this paper, photonic crystal ring resonators with hexagonal lattice structure are used to design a four-channel optical demultiplexer. The structure size, the average transfer coefficient, the quality factor, and the channel spacing are equal to 424.5 µm2, 95.8%, 1943, and 2 nm, respectively. The average crosstalk is also computed to be −18.11 dB. In this study, the plane wave expansion (PWE) and finite-difference time-domain (FDTD) methods are used, respectively, to characterize the photonic bandgap and to investigate the optical behavior of the structure. The proposed design can be used in dense wavelength division multiplexing (DWDM) systems.

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Correspondence to Mahmood Seifouri.

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Fallahi, V., Seifouri, M., Olyaee, S. et al. Four-channel optical demultiplexer based on hexagonal photonic crystal ring resonators. Opt Rev 24, 605–610 (2017).

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