Realization of all logic gates using metamaterials based three dimensional photonics structures: A future application of 3D photonics to optical computing

Understanding of all type of logic gates (NOT,AND,OR,NAND,NOR,Ex-OR,Ex-NOR) is disclosed in this paper using metamaterials based three dimensional photonics structure, which is a remarkable progress of photonics. The principle of investigation of the same is analyzed through photonic band gap analysis of 3D structure, which is carried out by using plane wave expansion method. Moreover, the operational mechanism for the same is manipulated with two signals of IR regime, 1950 nm and 2150 nm with 3D photonics. Further, the physics of research relies on the effective permittivity of metamaterial based 3D structures with respect to said signal. The reason for choosing such material is that zero absorption loss is associated with it. The outcome of logic gates is envisaged through the analysis of transmittance and reflectance characteristics. The interesting fact of this work is that a particular logic gate is seen with fixed values of lattice constant and diameter of air holes. Finally, the simulation upshot divulged that proper lattice spacing and diameters of air holes control reflection and transmission characteristics, which are onus to understand the different logic operation.