Xian Zhao, Yongjie Wang, Huicong Li, Dengpan Zhang. High-Temperature Fiber Bragg Grating Sensor Array Based on Femtosecond Fiber Grating[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106032
- Laser & Optoelectronics Progress
- Vol. 60, Issue 11, 1106032 (2023)
Fig. 1. Schematic of the femtosecond-grating preparation process
Fig. 2. FBG reflection and transmission spectra
Fig. 3. Schematic of the experimental setup
Fig. 4. Annealing process
Fig. 5. FBG spectra before and after annealing
Fig. 6. Schematic of package structure
Fig. 7. Photo of the sensor
Fig. 8. Temperature calibration experiment system
Fig. 9. Calibration process record
Fig. 10. Fitted result of center wavelength as a function of temperature
Fig. 11. Temperature measurement error distribution
Fig. 12. Sensor actual measurement installation diagram
Fig. 13. System operation interface
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