【摘要】 作为性能优良的敏感元件,均匀光纤布拉格光栅、啁啾光纤布拉格光栅等多种传感器已经有了更多的应用领域。通过光纤布拉格光栅内部写入、干涉法侧面写入、相位模版法写入等制作技术的原理说明和对比评介,通过光纤光栅传感器对所在环境的应变、应力、温度变化和动态磁场的感应原理分析,以及对光纤光栅传感器在复合材料、电力系统、石油天然气井和建筑结构中的应用工程的综述,阐明了这一类传感器件在单参数传感测量,特别是多参数传感测量中还有很大的发展空间,值得进一步研究。更多还原

【Abstract】 Fiber grating is diffraction grating which uses a certain method to change the core index permanently and periodically along the axial direction of photosensitive fiber.In the use of fiber as carrier,the fiber grating sensors measure the changes of parameters of the external environment indirectly by detecting the reflective or projective diversifications of the central wave.Characterized by high precision,small diameter,softness,light weight and resistance to the interference of electromagnetic and atomic radiation,the fiber Bragg grating sensor has been widely used in industry,agriculture,biology,medical care,defense and other fields.With the progress of optical fiber and fiber grating fabrication,the accuracy and reliability of fiber Bragg grating sensor is also improved gradually.The fiber Bragg grating sensor was previously used in temperature and stress measurement.But now it is applied to harsh environment detecting,structural health monitoring,as well as composite materials and medical care.So far the fiber sensors have developed from single parameter to multi-parameters measurement.This paper involves the development of fiber Bragg grating fabrication,the principle and current application of fiber grating sensors and their development prospects.更多还原