摘要：This paper purposed application of fiber optic as liquid sensor for detection of various concentrations of corn oil. The final result would an additional understanding about fiber optic sensor and could be used in related field such as food industry sector. They are 20 samples of corn oil with different concentrations between 0% until 100% are tasted. For every concentration, would experience a dipped process together with fiber optic before measuring process. Each of concentrations would present different results in line graph. The experiment results would be discussed in listed values of sensitivity, correlation and coefficient of determination of graft which are totally dependent on concentration of corn oil and the light source. With a different value of concentration and 1550nm wavelength of light source, the maximum sensitivity of 0.00072 the coefficient of determination 94.0% is obtained at third slope, respectively. Fiber optic is successfully to be corn oil liquid sensor and would be in high performance by using 1550 nm wavelength of light source and measuring concentration more than 85%.
