Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7133177 | Sensors and Actuators A: Physical | 2018 | 5 Pages |
Abstract
An optical fiber liquid refractive index (RI) sensing method based on Fresnel reflection of Raman anti-Stokes light is firstly proposed and demonstrated. A specially fabricated sensor head formed by a fiber end and a fiber coil is designed, and they are used to sense RI and temperature respectively. Experimental results show that the sensor has a RI resolution up to 0.0002 RIU (Refractive Index Unit) and a temperature accuracy of ±1â¯Â°C within a measurement range of 10â¯km. The performance confirms that the sensor has potential to act as a remote refractometer and thermometer. Its case of simple fabrication of using only one multimode fiber offers attractive remote RI and temperature sensing applications involving chemical and biological fields.
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Authors
Dong Wang, Jingkuo Tong, Baoquan Jin, Yu Wang, Mingjiang Zhang,