Resen, Deyhaa A. and Hmood, Jassim K. and Harun, Sulaiman Wadi (2020) Optical fibre sensor using frequency beating technique. International Journal of Nanoelectronics and Materials, 13 (2). pp. 241-248. ISSN 1985-5761,
Full text not available from this repository.Abstract
In this paper, a new method to realize the optical fibre sensor using an optical heterodyne technique (OHT) is proposed and numerically demonstrated. In this method, the bandpass filter (BPF) was utilized as a reference element and fibre Bragg grating (FBG) served as a sensing element. The wideband light is equally split and launched to sensing and reference elements. The reflected light of sensing element coherently interferes with the output of BPF inside 3-dB coupler. A photodiode detects the interfered signal and the beat frequency can be determined to achieve a high-resolution. To examine the proposed method, the scheme for temperature sensing is investigated. The Fabry-Perot narrow-bandpass filter type (F7 glass) serve as BPF. The results reveal that a good and fast response to temperature change with the sensitivity of 1.152 GHz/oC can be obtained. © 2020, Universiti Malaysia Perlis. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Bragg Grating Fibre; Fabry-Perot Narrow-Bandpass Filter; Interferometric Sensors; Optical Heterodyne Technique |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 05 Aug 2020 07:37 |
| Last Modified: | 05 Aug 2020 07:37 |
| URI: | http://eprints.um.edu.my/id/eprint/25267 |
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