Intelligent layered fiber bragg grating two-dimensional strain sensor

The invention discloses an intelligent layered fiber bragg grating two-dimensional strain sensor. The sensor comprises three dual fiber gratings engraved on the same polarization maintaining grating,wherein the polarization maintaining grating is bent to form an equilateral triangle, the three dual fiber gratings are respectively arranged on one side, the first dual fiber grating and the second dual fiber grating are strain measurement gratings, the third dual-fiber grating is a temperature compensation grating, central wavelengths of the three dual fiber gratings are different, the three dual fiber gratings and the polarization maintaining fiber are all packaged in a packaging film, a U-shaped packaging area is arranged outside the third dual fiber grating, and only a U-shaped opening area of the U-shaped packaging area is connected with the packaging film. The sensor is advantaged in that strain measurement during measurement can be performed on a surface of an irregular curved surface, the spatial resoluti