Abstract
In this paper, a new design of channel drop filter (CDF) based on two-dimensional photonic crystal ring resonators (PCRRs) is provided by two-dimensional (2D) finite-difference time-domain (FDTD) simulations in triangular lattice photonic crystal (PC) silicon rods. 100% forward dropping efficiency and a quality factor of over 1000 can be achieved at maximum transfer efficiency while the operating wavelength is 1550nm. Through this novel component, three channel drop operation with 100% dropping efficiencies at all output channels can be obtained. The proposed filter provides a possibility of channel drop filter and could be used in coarse wavelength division multiplexing (CWDM) systems.
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