Three output port channel-drop filter based on photonic crystals.
We present a photonic-crystal (PC) channel-drop filter (CDF) design based on 3x3 PC ring resonators. The normalized transmission spectra for single-ring and dual-ring configurations have been investigated using two-dimensional finite-difference time-domain (FDTD) technique in a square-lattice dielectric-rod PC structure. First, we investigate a single ring and we show that backward and forward dropping is possible in the third communication window. Then we add another ring and waveguide to develop a new CDF. This filter consists of an input and three outputs. Our FDTD simulation yields more than 85% efficiency over each output port.
Monifi
F
F
Department of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran. faraz.monifi@ee.kntu.ac.ir
Ghaffari
A
A
Djavid
M
M
Abrishamian
M S
MS