Photonic Crystal Micro-Ring Resonator for Urine Analysis for Different Diseases

In this paper, 2D photonic crystal hexagonal micro-ring resonator, a biosensor, has been designed to detect various diseases by analyzing the different components in the urine samples. These samples consist of different constituents like urea, bilirubin, albumin, and others in a particular range. When the concentration of these components varies, they exhibit different refractive indexes, which shifts the resonance wavelength of the output signal of the resonator. For this purpose, a hexagonal micro-ring resonator is designed that shifts the resonant wavelength in response to the change in refractive index. The Finite Difference Time Domain (FDTD) method is used to analyse the biosensor. The proposed biosensor gives a Q-factor of 3905 between the wavelength range of 1560nm and 1565nm.