Research in Computing Science, Vol. 131, pp. 79-86, 2017.
Abstract: In this work, we show the fabrication of a fiber optic sensor for the liquid fuel identification which is based on multimodal interference effects (MMI). The sensor structure is formed by a no-core multimode fiber (NC-MMF) splicing between two SMF. When the NC-MMF is immersed in a liquid combustible, the conditions of effective refractive index and the effective diameter of the NC-MMF are modified. Thus and the spectral shift of an optical signal output is used as refractometer to identify every kind of fuel. This MMI sensor exhibits a sensitivity of 258.06 nm/RIU for substances with a refraction index (RIU) from 1.318 to 1.4203 range. To test of the sensor, we use four of the most employed industrial and commercial combustibles like: methanol (M100), ethanol anhydrous (E100), gasohol (E50 to E10) and gasoline 87 octanes (G87). The sensor also provides high repeatability, reversibility and exhibit a fast and simple fabrication process. In addition, we show that the sensor response is enhancing by reducing the diameter of the NC-MMF.
PDF: Liquid Fuel Identification Using a Fiber Optic Sensor Based in Multimode Interference Effects (MMI)
PDF: Liquid Fuel Identification Using a Fiber Optic Sensor Based in Multimode Interference Effects (MMI)