On-line corrosion monitoring optical fiber sensor, and preparation method thereof

The invention discloses an on-line corrosion monitoring optical fiber sensor, and a preparation method thereof, and belongs to the technical field of sensor. The on-line corrosion monitoring optical fiber sensor comprises an optical fiber matrix without a 10 to 20mm sheath and a coating layer; the optical fiber matrix comprises an optical fiber core and a cladding layer used for coating the external surface of the optical fiber core; the cladding layer comprises fracture surfaces, and a fracture part between the opposite fracture surfaces; the optical fiber core possesses exposure parts at thefracture part; the external surfaces of the exposure parts are provided with alloy sensitive film layers; the alloy sensitive film layers are applied onto the fracture surfaces. In monitoring processusing the on-line corrosion monitoring optical fiber sensor, influence factors are few, monitoring results are capable of reflecting corrosion states preferably, and operation is simple. 本发明公开种在线腐蚀监测的光纤传感器及制备方法，涉及传感器技术领域，其包括：