Fig. 1. Schematic of sensor structure

Fig. 2. Change of reflected light intensity with fineness and phase

Fig. 3. Relationship between the radius and the sensitivity at different film thicknesses

Fig. 4. Process flow of sensor head fabrication. (a) Oxidative deposition protective layer; (b) lithography; (c) etching; (d) coating; (e) remove the protective layer; (f) bond

Fig. 5. Sensor spectrogram

Fig. 6. Initial cavity length of optical fiber F-P pressure sensor

Fig. 7. Fitting curves of pressure and cavity length

Fig. 8. Temperature characteristics of optical fiber F-P pressure sensor