Investigation of Multi-Channel in Photonic Crystal Circuits
نویسنده
چکیده
Among various photonic crystal devices, ultra compact channel drop filters based on resonance coupling between waveguide modes of line defects and cavity modes of point defects have attracted researchers attention due to the substantial demand in wavelength division multiplexed (WDM) optical communication systems. We will investigate the properties of resonant modes which arise from the introduction of local defects in two-dimensional (2D) photonic crystals and will show that the properties of these modes can be controlled by simply changing the nature and the size of the defects. The time, polarization, symmetry and distribution of the resonance modes will be computed by solving Maxwell’s equations in the time domain. The results of the theoretical modeling have been applied to design a 2D PC-based five-channel drop filter with a simple structure. The performance of the designed filter has been simulated using the finite-difference time-domain (FDTD) method.
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