Plastic Optical Fiber as Water-Level Sensor:

Bakti Dwi Waluyo; Joni Syafrin  Rambey; Muhammad Aulia  Rahman S

doi:10.21070/jeeeu.v7i2.1674

(1) * Bakti Dwi Waluyo Universitas Negeri Medan
Indonesia
(2) Joni Syafrin Rambey Universitas Negeri Medan
Indonesia
(3) Muhammad Aulia Rahman S Universitas Negeri Medan
Indonesia
(*) Corresponding Author

DOI: https://doi.org/10.21070/jeeeu.v7i2.1674

Abstract

This research presents a low-cost sensor for measuring liquid levels using plastic optical fibers (POF). The sensor reduces the scattering-based optical losses in the fiber, which increase linearly with the liquid height. A U-bent fiber probe and photodetector are used to detect the change in optical intensity. The U-bent probe serves as a test probe for measuring the liquid level. The voltage response difference of the photodetector provides liquid level measurement. This study demonstrates the sensor's responsiveness to liquid level fluctuations above 55 cm at varying temperatures. Sensitivity levels of 1.4 and 3.3 mV/mm were achieved for water level fluctuations below and above 45 cm, respectively. Furthermore, the sensor demonstrated consistently stable responsiveness over multiple cycles.

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Plastic Optical Fiber as Water-Level Sensor

Serat Optik Plastik sebagai Sensor Level Air

Abstract

References