High-durability and long-scale-distance fiber grating sensor and manufacturing method therefor

A high-durability and long-scale-distance fiber grating sensor and a manufacturing method therefor, which relate to the technical field of fiber grating sensors. A fiber grating (4) is disposed on the middle segment of a commercial optical fiber (5). A bushing (7), a woven fiber jacket layer (8) and a packaging structure (6) are disposed on the periphery of the commercial optical fiber (5). The commercial optical fiber (5) and the bushing (7) therebetween are fixed by using fixing points (11) in the bushing. Anchoring segments (12) are disposed between the fixing points (11) in the bushing and the woven fiber jacket layer (8). Two ends of the commercial optical fiber (5) are sequentially connected to optical fibers (13) on the anchoring segments and connecting optical fibers (15). Tail ends of the connecting optical fibers (15) are connected to a transmission cable (6) by using connecting flanges (16). By using the apparatus and the manufacturing method, the applicability and the durability of application of the fiber grating sensor in the civil traffic engineering field are improved, thereby providing a stable and reliable apparatus for long-time detection and sound monitoring of large engineering structures in the civil traffic engineering field.