Abstract
In this work, the optical fiber chemical sensor had been introduced based on the Fabry- Perot interferometer technique. Single-mode fibers were used with different diameters (125, 60, 50) μm. Chemical etching technology is used to reduce fiber diameters. Sensor heads were immersed in chlorophyll dye with different concentrations. The submitted sensor shows good sensitivity and linearity towards the variation in the chemical dye concentration. Both the peak wavelength and peak power were changes. The higher wavelength and power sensitivities were higher for the sensors with a smaller diameter. This technique could be very useful in medicine, drug pharmaceutical and food industries applications.
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