Fiber optic system to measure adulteration in liquids using an RGB detection

In this paper, we propose a fiber optic system to measure the changes in RGB composition of light liquid solutions using plastic optical (POF) as an intrinsic sensor. The measurement is composed 3 W white light-emitting diode source, 20 cm long U-shaped POF, and photodiode array that allows us detect propagating through POF. POF has length 5 mm without coating, which remains contact with solutions. tests were performed different concentrations mixture tequila water. results obtained showed resolution 0.39 % color change sensitivity 0.1, 0.6, 0.4 8–bits/% sample for red, green, blue colors, respectively. These will allow design low-cost prototype amount adulteration liquids.