Fig. 1. Structural diagram of FBG inclination sensor

Fig. 2. Force diagram of sensor under inclination

Fig. 3. Sensor fabrication. (a) Carbon fiber beam with embedded fiber gratings; (b) photo of sensor after packaging

Fig. 4. Schematic of testing device for FBG inclination sensor

Fig. 5. Experimental results. (a) Real-time data of wavelength shifts of fiber grating; (b) output data of wavelength shift difference

Fig. 6. Test data and fitting. (a) Six wavelength shift difference curves during uploading and downloading; (b) median fitting result

Fig. 7. Time-history curve of creep performance test

Fig. 8. Time-history curve of temperature test

Fig. 9. Precision test results. (a) Comparison diagram for precision test; (b) absolute difference for precision test