Sensitivity Enhancing of Oil Viscosity Sensor Based on Optical Fiber by Using Bending Angle Method

Abstract

Testing of oil viscosity sensor based on plastic optical fiber by using bending angle variation method to enhance the sensor sensitivity. This sensor is made by forming an optical fiber bending angle, it is dipped into the oil viscosity liquid. The light transmitted through into the optical fiber will be received by the photodetector and the measurement results are displayed on the OPM in the form of output power. The best measurement obtained at the bending angle of 300 with value of sensor sensitivity is 1.013 nW/mPa.s. This method has the advantage of high sensitivity in a simple measurement process.

Imperfection method based on optical fiber for alcohol content detection sensor

“…Sensitivity (S) is the sensitivity level of the sensor to the measured amount of solution, namely S = (Pmax-Pmin)/(Kmax-Kmin). At the same time, Resolution (R) is the smallest value that can be measured by the sensor, namely R = N/S [22][23][24]. Where N is the smallest OPM scale value of 0.001 µW, the calculation of sensor characteristics values can be seen in Table 1.…”

“…It is because the Gamma configuration occurs macro bending compared to the U configuration, resulting in greater power losses. The greater the power losses that occur, the better the sensor characteristics [21,[23][24]. Optical fiber-based sensors using the imperfection method are suitable for detecting alcohol contents because they have high sensitivity.…”