Photonic Crystal Sensor For The Detection of RedBlood Cells Clotting In Blood

A photonic crystal biosensor with a y-shape cavity structure is proposed in this paper to sense the Red Blood cell (RBCs) concentration in blood. This sensor is proposed for biomedical applications to analyze the concentration based on the refractive index profile. Blood is a very crucial component of the human body. This blood is composed of several components and RBCs are very important parameters in blood. RBC concentration detection is essential for the diagnosis of red thrombus conditions and several critical diseases. So, the identification of variation in RBC concentration in blood with higher accuracy and maximum sensitivity is critical. This photonic crystal sensor detects changes in the detecting waveguide's refractive index, which change in response to changes in the blood's red blood cell (RBC) content. The change in the refractive index also changes the normalized output power and also shifts the position of the resonant peak. The dimension of the proposed structure is very. compact. The sensitivity of the design structure is 1820 nm/RIU and the normalized output power is around 60%. The Simulation is done in the Finite Difference Time Domain (FDTD).