材料科学
光学
光纤传感器
纤维
光纤
波长
单模光纤
色散位移光纤
温度测量
毛细管作用
渐变折射率纤维
解调
光电子学
电信
物理
频道(广播)
量子力学
计算机科学
复合材料
作者
Yi-Chun Li,Zhuo Song,Jiao Pan,Hanglin Lu,Junhui Hu
出处
期刊:Optics Express
[The Optical Society]
日期:2022-02-23
卷期号:30 (5): 7870-7870
被引量:14
摘要
An in-line reflective dual-parameters fiber-optic sensor is proposed in this work, whereas it is experimentally verified by measuring both the liquid level and the local temperature distribution simultaneously. The proposed sensor configuration comprises a single-mode fiber (SMF), a tapered few-mode fiber (TFMF), as well as a silver-coated capillary tube. The extracted experimental results indicate that the liquid level only affects the power of the resonant dips, while having little impact on the wavelength. On the other hand, both the wavelength and the power of the resonant dips vary with the temperature change. Therefore, the simultaneous measurement of the liquid level and temperature can be realized according to the different responses of the resonant dips to the liquid level and temperature. The obtained liquid level and temperature sensitivities can reach the values of 0.106 dB/mm and 0.029 dB/°C, 35 pm/°C, respectively. The sensor exhibits the advantages of high stability and low cost, the demodulation relates on only one wavelength which can shorten the scanning wavelength range during measurement. The proposed sensor can be potentially applied where accurate and simultaneous measurements of both temperature and liquid level are required.
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