Batumalay, Malathy and Lokman, A. and Ahmad, F. and Arof, Hamzah and Ahmad, Harith and Harun, Sulaiman Wadi (2013) Tapered Plastic Optical Fiber Coated With HEC/PVDF for Measurement of Relative Humidity. IEEE Sensors Journal, 13 (12). pp. 4702-4705. ISSN 1530-437X, DOI https://doi.org/10.1109/JSEN.2013.2272329.
Full text not available from this repository.Abstract
A simple humidity sensor is proposed and demonstrated using a tapered plastic optical fiber (POF) as a probe. Its operation is based on intensity modulation technique using a tapered POF probe coated with a polymer blend of hydroxyethylcellulose/polyvinylidenefluoride (HEC/PVDF) composite that acts as the humidity sensitive cladding. The sensor is fabricated using an etching method and has a waist diameter of 0.45 mm and tapering length of 10 mm. As the relative humidity varies from 50% to 85%, the output voltage of the sensor increases linearly from 0.32 to 1.25 mV. The HEC/PVDF composite-coated sensor exhibits a sensitivity of 0.023 mV/% with a slope linearity of . The sensitivity of HEC/PVDF composite-coated cladding toward humidity stems from its ability to swell as humidity increases in the atmosphere resulting in a drop in its refractive index below that of the core and thus allowing more light to be transmitted through the tapered fiber.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Fiber optic sensor; Tapered plastic optical fiber; Humidity sensor; Relative humidity (RH); Hydroxyethylcellu- lose/polyvinylidenefluoride (HEC/PVDF) |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 29 Oct 2015 07:45 |
| Last Modified: | 09 Oct 2018 05:34 |
| URI: | http://eprints.um.edu.my/id/eprint/14388 |
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