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http://dx.doi.org/10.5515/KJKIEES.2017.28.11.865

Gelatin Film Coated Fiber-Optic Directional Coupler-Based Humidity Sensors  

Son, Gyeongho (School of Electrical Engineering, Korea Advanced Institute of Science and Technology)
Kim, Minchul (School of Electrical Engineering, Korea Advanced Institute of Science and Technology)
Yu, Kyoungsik (School of Electrical Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.28, no.11, 2017 , pp. 865-871 More about this Journal
Abstract
In this paper, a gelatin layer was formed on the surface of the twisted fiber-optic couplers fabricated by hydrofluoric acid, which can be used to measure relative humidity. The proposed method of sensors has advantage of low cost compared with the sensors based on the conventional electronic devices and takes beneficial characteristics of optical fibers and light. The fiber-optic sensors presented in this study show a measurement from about 40% to 85% relative humidity, and the experimental results agree well with the calculated results. Based on the design presented in this paper, the structure will enable promising applications in the detecting humidity and various hazardous gases.
Keywords
Humidity Sensor; Fiber-Optic Sensor; Fiber-Optics; Optical Coupling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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