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本文提出一种高双折射光纤圈应变传感器，可用来检测该困面内二维任意方向的应变，其灵敏度通过增减由数可方便加以调整．检测结果表明，观测到的相位变化与用应力阻抗议测得的应变之间有极好的线性．
This paper presents a high birefringence fiber optic ring strain sensor can be used to detect the two-dimensional distorted surface in any direction of the strain, the sensitivity by increasing or decreasing the number can be easily adjusted. The test results show that there is an excellent linearity between the observed phase change and the strain measured with the stress impedances.