Photonic Crystal based Micro Ring Resonator Sensor Design for Urinanalysis

In the medical diagnosis, urinanalysis has a significant role in the recognition of many infections, diabetes and kidney diseases. In this article, photonic crystal (PhC) micro ring resonator (MRR) is proposed for different hematological or renal disorders where the concentrations of different components of urine can be detected using refractive index (RI) variation of urine. The proposed sensor works on the principle of resonance wavelength shift due to analytes having different RI and is simulated using FDTD simulation. High sensitivity is achieved with the reported structure as 720 nm/RIU for various glucose concentrations, 830 nm/RIU for various albumin concentrations and 701 nm/RIU for different urea concentration in the urine and the structure would be beneficial for various sensing purpose.