Development of No-slip Optic Fibers as Brillouin Scattering Based Distributed Sensors
In this paper, the sensing behavior of the pulse- prepump Brillouin Optical Time Domain Analysis (PPP- BOTDA) based distributed sensing technique with a 0.1 m-order spatial resolution is experimentally studied, and the sensing features of different types of fiber optic sensors (FOSs) are compared. Based on experimental results, we found that slippage occurred between bare fibers and coating materials, and that a different FOS type has a different degree of slippage. Despite possessing 10 cm-order spatial resolution, if the gauge length of FOS is shorter than the critical effective sensing length (CESL), the measurement accuracy is significantly affected by the slippage. In order to enhance the sensing performance of FOS, a packaging design for the practical adaptation of no-slip FOS for structural health monitoring applications is proposed. Finally, the performances of packaged optic fibers are experimentally verified.
FOS PPP-BOTDA Slippage Package method No-slip FOS
Hao Zhang Zhishen WU
Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki, Japan
国际会议
南京
英文
540-547
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）