Fiber optic chemical sensor using fiber coupler probe based on intensity modulation for alcohol detection

Yasin, Moh and Harun, Sulaiman Wadi and Tan, C.F. and Phang, Sook Wai and Ahmad, Harith (2011) Fiber optic chemical sensor using fiber coupler probe based on intensity modulation for alcohol detection. Microwave and Optical Technology Letters, 53 (8). pp. 1935-1938. ISSN 0895-2477

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Official URL: https://doi.org/10.1002/mop.26124

Abstract

A simple intensity modulation based displacement sensor using fiber optic coupler probe is proposed and demonstrated for sensing the concentration of alcohol solution. The intensity of light reduces almost linearly with the displacement and the sensitivity of the curve is dependent on the concentration of the alcohol solution. For a concentration change of methanol from 0 to 35 % in distilled water, the sensitivity is observed to be increased linearly with the concentration due to the reduction of the refractive index of the solution. The highest sensitivity is obtained at around 0.00002mV/(%). The stability, high sensitivity and simplicity of the sensor make it suitable for chemical, pharmaceutical, biomedical and process control sensing applications.

Item Type: Article
Uncontrolled Keywords: Chemical sensor; Fiber coupler probe; Fiber optic sensor
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 02 Jan 2019 02:05
Last Modified: 02 Jan 2019 02:05
URI: http://eprints.um.edu.my/id/eprint/19861

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