Brillouin fibre laser discrete sensor for simultaneous strain and temperature measurement

被引：1
|
作者：
Frazao, O.
Marques, J. M.
Santos, J. L.
Marques, M. B.
Baptista, J. M.
机构：
[1] INESC Porto, P-4169007 Oporto, Portugal
[2] Univ Madeira, Dept Matemat & Engn, Funchal, Portugal
[3] FCUP, Dept Fis, P-4169007 Oporto, Portugal
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2007年 / 86卷 / 03期
关键词：
Strain Measurement; Pump Wave; Temperature Discrimination; Laser Sensor; Bragg Wavelength;
D O I：
10.1007/s00340-006-2516-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this work, a Brillouin fibre laser sensor for strain and temperature discrimination is presented. The fibre laser sensor consists of a Fabry-Perot cavity with 20 m of optical fibre between two Bragg gratings. For the strain measurement, the 20 m were split in half and in 10 m a pre-tension was applied originating two Brillouin peaks. For the temperature measurement all of the sensing head was heated. The resolutions achieved were +/- 1 mu epsilon and +/- 1 degrees C for strain and temperature measurements, respectively.
引用
收藏
页码：555 / 558
页数：4
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