OPTICAL FIBER PRESSURE SENSOR BASED ON PHOTOELASTICITY AND ITS APPLICATION

被引:49
作者
WANG, AB [1 ]
HE, S [1 ]
FANG, XJ [1 ]
JIN, XD [1 ]
LIN, JX [1 ]
机构
[1] VIRGINIA POLYTECH INST & STATE UNIV,FIBER & ELECTROOPT RES CTR,BRADLEY DEPT ELECT ENGN,BLACKSBURG,VA 24061
关键词
D O I
10.1109/50.166790
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An optical fiber pressure sensor based on the photoelastic effect using a new compensation technique is described in this paper. Two optical sources and a polarization-splitting prism are incorporated into a sensor system to minimize output drifts. The four major factors-the optical source power, the fiber loss, the optical coupling loss, and the modal power distribution in fibers-are well compensated. The measurement range of 0-147 KPa has been obtained with accuracies of 0.2% within the temperature range of -10-degrees-C to 42-degrees-C and a resolution of 10 Pa has been achieved. Compensation for fiber loss has been observed up to -30 dB. This sensor system has been successfully put into practical operation for oil storage measurement in a tank.
引用
收藏
页码:1466 / 1472
页数:7
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