Abstract
Low-cost multimode fiber (MMF) optic sensor for detection and determination of adulterant traces of palm oil in coconut oil is experimentally demonstrated. The fundamental principle of detection is the sensitive dependence of the wavelength shift on the refractive index changes of the surrounding medium of multimode fiber cladding. The transmission spectral changes due to variation of adulteration levels have been investigated. Building up of this low-cost multimode fiber optic sensor is helpful in prevention of adulteration. This technique has resulted in 20% adulteration for coconut-palm oil binary mixture
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