Robinson S,Nakkeeran R.Photonic crystal ring resonator based add-drop filter using hexagonal rods for CWDM systems[J].Optoelectronics Letters,2011,7(3):164-166 Photonic crystal ring resonator based add-drop filter using hexagonal rods for CWDM systems Author Name Affiliation Robinson S  Department of Electronics and Communication Engineering,Pondicherry Engineering College；  Nakkeeran R  Department of Electronics and Communication Engineering,Pondicherry Engineering College；  Abstract:       In this paper,theoretical analysis of two-dimensional photonic crystal ring resonator(2D PCRR) based add-drop filter(ADF) is presented for coarse wavelength division multiplexing(CWDM) system to drop a channel at 1511 nm using hexagonal rods that are positioned in the square lattice.The 2D finite difference time domain(2D FDTD) method and plane wave expansion(PWE) method are used for obtaining the filter response and band structure of the filter respectively.Close to 100 dropping and coupling ef. Hits: 4499 Download times: 210 View Full Text    Download reader