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简要分析了多模光纤对微弯曲所引起的传输损耗的灵敏度，从理论和实验两方面说明了微弯曲损耗所取决的因素，并在实验中采用了光时域反射仪（ＯＴＤＲ）技术，结果表明，利用多模光纤的微弯曲损耗特性，可以实现各类理想的光纤传感器．
The sensitivity of multimode fiber to the transmission loss caused by microbending is briefly analyzed. The factors that affect the microbend loss are explained theoretically and experimentally, and optical time-domain reflectometry (OTDR) is used in the experiment. The results It shows that the use of multi-mode fiber micro-bending loss characteristics, can achieve a variety of ideal optical fiber sensor.