Bi-core photonic crystal fiber for blood component detection

A novel Bi-Core Photonic Crystal Fiber (BC-PCF) is presented to sense and detect foremost blood constituents. Solid core is opted for the presented sensor owing to its special feature in allowing light of all wavelength. As blood is a vital fluid in human body, recognition of blood components is highly necessary. Here, five major components of blood to be detected from sample analyte are considered as red blood cells, hemoglobin, white blood cells, water and plasma. Coupling mode theory is used and the shift in transmission power spectrum is observed which assists in blood component detection. The optical study along with PCF characteristic analysis is done by using finite element method. Presented BC-PCF sensor reveals superior sensitivity of 6680 nm/RIU for x-polarization and 6930 nm/RIU for y-polarization with less coupling length in millimeter range. This simple designed sensor providing superior sensitivity with low coupling length paves way for various applications in biomedical field.