Document Type : Research Paper
Optical fiber biosensor for measuring Packet Cell Volume concentration (PCV) of human blood depending on the attenuation of light is designed and implemented during this work. Its present a simple and accurate method to measure blood viscosity. Three lasers’ wavelengths have been used in this system. These lasers are He-Ne laser with (632nm) wavelength, (5 mw) power, laser diode with (532nm) wavelength, (20 mw) power and another laser diode with (430nm) wavelength, (20 mw) power. The system works by transmitting light through an optical fiber to the sample; the amount of light absorbed by the analyte is detected through a second fiber.