Fiber optic distributed sensing scheme for monitoring structural strain and deformation

被引：0
|
作者：
Luo, F [1 ]
Liu, JY [1 ]
Chen, SC [1 ]
机构：
[1] NANJING UNIV AERONAUT & ASTRONAUT,DEPT MAT SCI & ENGN,NANJING 210016,PEOPLES R CHINA
来源：
OPTICAL ENGINEERING | 1997年 / 36卷 / 05期
关键词：
fiber optic sensor; high-birefringent fiber; mode coupling; strain measurement; interferometry;
D O I：
10.1117/1.601353
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fiber optic distributed sensing scheme used to monitor structural strain and deformation is presented. In the sensor system, a high-birefringent optical fiber is used as the sensing fiber, and the sensor units along the sensing fiber distribution are arrayed on a measured test structure. The structural deformation can be evaluated by detecting the polarization made coupling effect in each sensor unit along the high-birefringent fiber. Interferometry and optical path scanning are used to determine the location and magnitude of the mode-coupling effects caused by structural strain or deformation. (C) 1997 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码：1548 / 1551
页数：4
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