All-optical controllable channel-drop filters in two-dimensional square-lattice photonic crystals |
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Authors: | K Fasihi |
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Affiliation: | 1. Department of Electrical Engineering, Golestan University, Gorgan, Irank.fasihi@gu.ac.ir |
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Abstract: | A novel all-optical controllable channel-drop filter in photonic crystals (PC) of square lattice is presented. We show that using a resonant-cavity-based add-drop filter with a wavelength-selective reflection feedback and a single-control switching module which is based on nonlinear PC microcavities, the dropped channel can be routed to the drop port or returned to the bus waveguide. Using the temporal coupled-mode theory and two-dimensional nonlinear finite-difference time-domain method, the performance of the proposed device is investigated and the simulation results show the validity of the proposed design. |
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Keywords: | all-optical switch channel-drop filter (CDF) coupled-mode theory (CMT) finite-difference time-domain (FDTD) optical Kerr effect photonic crystal (PC) T-branch waveguide |
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