Citation
Abstract
Optical Fiber Bragg Grating (FBG) is commonly deployed as a wavelength selective filter in telecommunication as well as to detect physical changes such as pressure, temperature and strain in sensing applications. This paper presents an investigation of FBG as a chemical sensor towards ethanol in aqueous solution. Telecommunication standard single mode FBGs were coated with different thicknesses of thin gold films via sputtering deposition method. The combination of Bragg gratings and gold film enhances the evanescent wave on the surface of the optical fiber. It was found that the FBG coated with 50 nm gold layer exhibits the strongest response towards water with varying concentrations of ethanol. The sensor shows 55% change in absorbance levels when the concentration of ethanol is increased from 0 to 99.7% in water.
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Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Engineering Faculty of Science |
| DOI Number: | https://doi.org/10.2971/jeos.2014.14018 |
| Publisher: | European Optical Society |
| Keywords: | Optical fiber; Bragg grating; Sensor; Absorbance; Ethanol; Gold |
| Depositing User: | Nabilah Mustapa |
| Date Deposited: | 25 Jun 2015 04:57 |
| Last Modified: | 23 Oct 2019 08:01 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.2971/jeos.2014.14018 |
| URI: | http://psasir.upm.edu.my/id/eprint/36308 |
| Statistic Details: | View Download Statistic |
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