Fig. 1. Structure of optical fiber temperature and humidity sensor

Fig. 2. Cone area image under optical microscope

Fig. 3. Schematic of electrospinning

Fig. 4. Optical fiber morphology after electrospinning. (a) 100×； (b) 500×； (c) 1000×； (d) 50000×

Fig. 5. Schematic of sensor temperature and humidity test device

Fig. 6. Relationship between variation of reflectance spectrum and relative humidity. (a) Relative humidity increased; (b) relative humidity decreased

Fig. 7. Fitting relationship between power and relative humidity

Fig. 8. Relationship between reflectance spectrum and temperature. (a) Temperature increased; (b) temperature decreased

Fig. 9. Fitting relationship between center wavelength and temperature