Desain Sensor Serat Optik untuk Pengukuran Indeks Bias Larutan Garam dan Larutan Gula

Oleh :
Nila Wulan Sari - M0207048 - Fak. MIPA

Research of Fiber Optics Sensor Design for Measurement of Salt and Sugar Solution Refractive Index has been done. In this study, light source from the LED (λ = 630 nm) came into the fiber optic transmitter, reflected by the mirror, and captured by fiber optic receiver in the solution. Light intensity was captured by a fiber optic receiver and a reference optical fiber, came into the photo detector, the intensity converted by oscilloscope as voltage peaks (mV) where the oscilloscope was recorded into two voltage values of voltage receiver and voltage reference. From the experiments were observed any change in the intensity of light captured by a fiber optic receiver caused by the changes of distance. The higher concentration of a solution, the larger the distance of its peak position. Regularity of the left slope and right slope of the intensity of light graph was reflected against the unobserved of the displacement number. From the peak position of each solution was obtained a one by one correspondence between the peak position of each concentrate solution due to the reference which came from the refractive index from concentrate refractometer abbe. Keywords: Fiber Optic Sensors, Sensor refractive index, fiber optics, refractive index