Slotted structure elastomer optical fiber rastor strain sensor head

The utility model relates to a slotted structure elastomer optical fiber grating strain sensor head, which belongs to the technical field for stress and strain and relates to an optical fiber grating strain sensor head structure. The sensor head structure comprises an elastomer with a through hole installed along the axial direction and the optical fiber passing through the through hole and being fixed to both ends of the through hole; two dumb bell heads are respectively arranged at both ends of the elastomer and fixed to the elastomer to induct force; a protective tube is used to seal and protect the elastomer and the optical fiber grating, and a definite gap is provided between the tube and the dumb bell heads in axial direction to make sure the elastomer has a definite compression length. This structure has advantages of simple packaging, very high sensibility, simple integrated structure, lower cost, and is a stable and reliable sensor head.