Three-dimensional force measurement sensor and decoupling method

The invention relates to a three-dimensional force measurement sensor and a decoupling method, the three-dimensional force measurement sensor comprises an elastic base body, the elastic base body comprises three base body sections in the length direction, and the three base body sections are suitable for deformation in three mutually perpendicular directions; the optical fiber body is fixedly arranged on the elastic base body in a penetrating mode in the length direction of the elastic base body, the optical fiber body comprises three optical fiber sections in the length direction of the optical fiber body, the three optical fiber sections are fixed to the three base body sections respectively, and optical structures are arranged on the three optical fiber sections; wherein the three optical structures are respectively used for detecting the strain generated by the corresponding optical fiber sections along with the deformation of the three base body sections in three directions. According to the three-dimens