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光纤传感器在混凝土结构深层裂缝监测方面具有巨大的工程应用价值。本文详细介绍了所研制开发的混凝土裂缝光纤传感器的原理和结构设计。从三点弯曲混凝土梁的加载试验结果看，传感器能很好地感知裂缝的发生和发展，并且在一定的裂缝开度范围内不断裂，从而能适应工程应用的要求。
Optical fiber sensors have great value in engineering application in the monitoring of deep cracks in concrete structures. This paper introduces the principle and structure design of concrete crack optical fiber sensor developed in detail. According to the loading test results of the three-point bending concrete beam, the sensor can sense the occurrence and development of the crack well, and does not break within a certain crack opening range so as to be able to meet the requirements of the engineering application.