Fig. 1. F-P type optical fiber temperature sensing structure based on reflection of optical fiber ceramic head

Fig. 2. Solid F-P type detection probe

Fig. 3. Schematic diagram of temperature sensing experiment

Fig. 4. Temperature response spectrum and linear fitting of air-filled F-P cavity

Fig. 5. Simulation and experimental comparison of cavity length and temperature sensitivity

Fig. 6. Temperature response spectrum and linear fitting of liquid-filled F-P cavity

Fig. 7. Temperature response spectrum and linear fitting of solid F-P temperature detection probe