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Vol. 217, Issue 11, November 2017, pp. 45-48




Fiber Optic Displacement Sensor for Measuring Cholesterol Concentration

1, 2 Moh. Budiyanto, 3 Suhariningsih, 4 S.W. Harun and 3 M. Yasin

1 Doctoral Study Programme, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
2 Department of Natural Science, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Surabaya 60231, Indonesia
3 Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
4 Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
3 Tel.: +62315936501, fax: +62315936502

E-mail: yasin@fst.unair.ac.id


Received: 3 November 2017 /Accepted: 28 November 2017 /Published: 30 November 2017

Digital Sensors and Sensor Sysstems


Abstract: A simple design of a cholesterol concentration detection is proposed and demonstrated using a fiber optic displacement sensor based on an intensity modulation technique. The proposed sensor uses a bundled plastic optical fiber (POF) as a probe in conjunction with a flat mirror as a target. It is obtained that the peak voltage reduces with increasing cholesterol concentration. The sensor is capable of measuring the cholesterol concentration ranging from 0 to 300 ppm in a distilled water with a measured sensitivity of 0.01 mV/ppm, a linearity of more than 99.62 % and a resolution of 3.9188 ppm. The proposed sensor also shows a high degree of stability and good repeatability. The simplicity of design, accuracy, flexible dynamic range, and the low cost of fabrication are favorable attributes of the sensor and beneficial for real- field applications. Fiber optic sensors


Keywords: Fiber optic sensors, Flat mirror, Cholesterol solution.


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