Theoretical model for measurement of hemoglobin in human blood using 3D photonic crystal structure

Because the concentration of hemoglobin in the human blood is important, optical measurement using 3D photonic crystal structure is presented in this structure. Here the concentration of oxygenated and deoxygenated hemoglobin in human blood is determined for two different wavelengths of 589 nm and 633 nm. The principle of measurement is based on the linear variation of photonic band gap with respect to concentration of both oxygenated and deoxygenated hemoglobin. The simulations for photonic band gap of 3D photonic crystal structure having different concentrations of hemoglobin are determined using plane wave expansion method. Again, simulation is also done to find out the absorption loss due to both silicon crystal structure and hemoglobin with respect to different concentration of hemoglobin in blood. An experimental set up is designed to measure the transmitted intensity with respect to these concentration of hemoglobin in the blood.