標題: | Reliability of stable fiber Bragg grating sensor system for monitoring temperature and strain individually |
作者: | Chang, Yao-Jen Yeh, Chien-Hung Chow, Chi-Wai 光電工程學系 光電工程研究所 Department of Photonics Institute of EO Enginerring |
關鍵字: | fiber Bragg grating (FBG);optical sensor;fiber laser |
公開日期: | 1-十月-2019 |
摘要: | In the investigation, the fiber Bragg grating-based sensor system is proposed and demonstrated to monitor temperature and strain individually. In order to obtain a stable and accurate sensing signal, an erbium-doped fiber (EDF) ring laser scheme with a 2 m long unpumped EDF as the saturable absorber is also proposed. Hence, the observed stabilization of output power and sensing wavelength can be less than 0.1 dB and 0.02 nm, and 0.3 dB and 0.02 nm in the sensor system, respectively, in the back-to-back state and 25 km fiber link. Hence, this sensor system can improve the output stability of the sensing signal. In addition, the temperature- and strain-induced wavelength shifts can be operated in the range of 20 degrees C-70 degrees C and 0-37 500 mu epsilon, respectively. |
URI: | http://dx.doi.org/10.1088/1361-6501/ab2290 http://hdl.handle.net/11536/152808 |
ISSN: | 0957-0233 |
DOI: | 10.1088/1361-6501/ab2290 |
期刊: | MEASUREMENT SCIENCE AND TECHNOLOGY |
Volume: | 30 |
Issue: | 10 |
起始頁: | 0 |
結束頁: | 0 |
顯示於類別: | 期刊論文 |