光纤布拉格光栅
材料科学
可靠性(半导体)
拉伤
光纤传感器
光学
纤维
复合材料
光电子学
物理
热力学
医学
波长
内科学
功率(物理)
作者
Yu-Jung Chang,Chien Hung Yeh,Chi-Wai Chow
标识
DOI:10.1088/1361-6501/ab2290
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 °C–70 °C and 0–37 500 µe, respectively.
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