Three output port channel-drop filter based on photonic crystals
- 26 January 2009
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 48 (4), 804-809
- https://doi.org/10.1364/ao.48.000804
Abstract
We present a photonic-crystal (PC) channel-drop filter (CDF) design based on 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.
Keywords
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