Discriminative sensing of temperature and acoustic impedance by using forward Brillouin scattering in large effective area fiber

被引:11
作者
Zhang, Zelin [1 ,2 ]
Lu, Yuangang [1 ,2 ]
Tanaka, Yosuke [3 ]
Peng, Jianqin [1 ,2 ]
Zhuang, Zhikang [1 ,2 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Space Photoelect Detect & Percept, Coll Astronaut, Nanjing 211106, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 211106, Peoples R China
[3] Tokyo Univ Agr & Technol, Grad Sch Engn, Dept Elect & Elect Engn, Koganei, Tokyo 1848588, Japan
基金
中国国家自然科学基金;
关键词
Forward Brillouin scattering; Optical fiber sensor; Simultaneous measurement; Radial acoustic mode; COEFFICIENT; FREQUENCY; COHERENT; LIQUIDS; LIGHT;
D O I
10.35848/1882-0786/abebb2
中图分类号
O59 [应用物理学];
学科分类号
摘要
We experimentally clarified the characteristics of forward Brillouin scattering induced by radial acoustic modes (R-0,R-m) in large effective area fiber. The measured resonance frequencies of R-0,R-m modes were shown to have different sensitivities to acoustic impedance. Then we performed discriminative measurement of temperature and acoustic impedance by selecting a pair of different R-0,R-m modes that would achieve the minimum measurement error, where we had successfully achieved small measurement uncertainties of 0.4 degrees C and 0.03 kgs(-1) mm(-2), respectively.
引用
收藏
页数:4
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