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本文在模体积失配效应与微弯原理的基础上，提出了一种新颖的城墙型式的光纤应变传感器，理论与实验结果表明传感器中传输光功率变化与应变之间近似为线性关系，且其可靠性高，重复性好，无迟滞现象．
Based on the principle of mode-volume mismatch and micro-bending, a novel wall-type optical fiber strain sensor is proposed. The theoretical and experimental results show that there is an approximate linear relationship between the change of transmitted optical power and the strain in the sensor. High reliability, good repeatability, no hysteresis.