A High Efficiency Optical Power Splitter in a Y-Branch Photonic Crystal for DWDM Optical Communication Systems

摘要

In this paper a high efficiency optical power splitter based on two-dimensional photonic crystals is proposed. The photonic crystal cavity is assumed to be constructed by TiO2 nanorods with refractive index n = 2.609. To do so, first we implement some techniques to design a 1*2 optical power splitter, which include Y-shape wave-guides and various types of defects such as point and line defects. The results of numerical simulations show that at the wavelength range of DWDM systems, the proposed 1*2 power splitter has the maximum efficiency of 99.616 %. A similar method is employed to design a 1*4 splitter with high performance operation at the same wavelength range which relates to the efficiency of 99.21% that is the highest amount between these type of power splitters. The final size of these high efficiency power splitters is 130 mu m(2) (10 mu m*13 mu m) which make them suitable for integrated optical circuits.