Bacterial Analysis of Drinking Water using Photonic Crystal based Optical Sensor

In this paper, design of an optical sensor is proposed which can be used for detection of bacteria in contaminated water. We have considered a couple of 2D photonic crystal structures (A and B). The analysis of both the structures is done with the help of Finite Difference Time Domain i.e. FDTD technique and modelling of these structures is done using OptiFDTD simulation tool. Optical properties of different bacteria in water are studied, and the refractive index values are given as input to OptiFDTD. Final response of different bacteria for the two structures is observed.