U-Shaped의 POF probe를 이용한 굴절률 변화 측정 Refractive Index Monitoring Using U-shaped POF probe

Refractive index monitoring using U-shaped POF (Plastic optical fiber) in the sugar solution and salt solution were performed. The various bending losses of U-shaped POF due to the environmental refractive index changes of the measurand solution. The loss increases according to the amounts of solute in the solution which causes the refractive index change in the solution.