Discriminative measurement of strain and temperature using Brillouin scattering and fluorescence in erbium-doped optical fiber

被引：0
|
作者：
Ding, Mingjie [1 ]
Mizuno, Yosuke [1 ]
Nakamura, Kentaro [1 ]
机构：
[1] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan
来源：
23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS | 2014年 / 9157卷
关键词：
Brillouin scattering; fluorescence intensity ratio; discriminative measurement; distributed fiber-optic sensing; erbium-doped optical fiber; heterodyne detection; FREQUENCY-SHIFT; DEPENDENCE; PROPOSAL;
D O I：
10.1117/12.2059438
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel discriminative strain and temperature measurement is demonstrated using Brillouin scattering and fluorescence in an erbium-doped fiber (EDF). The fluorescence intensity ratio, calculated using the fluorescence intensities (or powers) at 1530 nm and at 1565 nm, is linearly dependent on temperature with a proportionality constant of 7.5 x 10(-4)/degrees C, but is not influenced by strain. By combining the strain-and temperature-dependences of Brillouin frequency shift in EDFs, the applied strain of 0.4% and the temperature of 20.0 degrees C were successfully discriminated with measurement errors of 0.03% and 0.6 degrees C, respectively.
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页数：4
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