Fiber optic refractometer for liquid index of refraction measurements

Refractometers frequently are used for medical, pharmaceutical, industrial fluid, petrochemical, plastic, food, and beverage industry applications. For example, they are used for measuring the concentrations of aqueous solutions: as the concentration or density of a solute increase, the refractive index increases proportionately. The paper describe development work of a flexible fiber optic refractometer and its evaluation.