Abstract: The optical fiber sensor has more accuracy of testing, high undisturbed ability and wide application compared with the tradition electrical sensor. It can be used to measure several physical quantities of bridge structure, such as strain ,crack and vibration. It can not only measure the physical quantities by points, but can also obtain the test results by distribution network. This paper discusses the main characteristics and application of the optical fiber sensor. The attention items of prope

Key words: optical fiber sensor, bridge structure, monitoring, analysis of application

摘要： 光纤传感器与传统的电测传感器相比具有精度高，抗干扰能力强，适用范围广等特点，能够完成桥梁结构的 应变、裂缝、振动等多种物理量的测量。不但能实现结构物中点的物理量测试，而且能够进行分布式网络测量。探讨 了光纤传感器的主要特性和应用特点，提出了合理选择该类传感器的注意事项。

关键词: 光纤传感器, 桥梁结构, 监控, 应用分析