Han YANG, Kang XIE, Tingkuo CHEN, Qianfa LIN, Yibin ZHU, Ruiqi LI, Hongyan XIA. U-shaped Microfiber Humidity Sensor Based on PVA Coating[J]. Acta Photonica Sinica, 2023, 52(12): 1206002
- Acta Photonica Sinica
- Vol. 52, Issue 12, 1206002 (2023)
Fig. 1. Schematic diagram of microfiber fabrication
Fig. 2. Schematic diagram of the process of coated PVA
Fig. 3. U-shaped sensor structure illustration
Fig. 4. U-shaped sensor electron microscope diagram
Fig. 5. Transmittance spectrum of the sensor at 34% RH
Fig. 6. Sensor humidity experimental equipment diagram
Fig. 7. Spectrogram of resonant peak wavelength at 1 420~1 475 with humidity for sensor S-1 with a fit at 1 450~1 480 nm
Fig. 8. Spectrogram of resonant peak wavelength at 1 430~1 488 with humidity for sensor S-2 with a fit at 1 464~1 488 nm
Fig. 9. Spectral diagram of the resonant peak wavelength of sensor S-3 at 1 410~1 470 nm as a function of humidity
Fig. 10. Fitting diagram of resonant peak wavelength variation with humidity of sensor S-3 at 1 440~1 470 nm
Fig. 11. Spectrogram of resonant peak wavelength at 1 411~1 485 nm with humidity for sensor S-4 with a fit at 1 462~1 485 nm
Fig. 12. Diagram of sensor S-2 humidity stability
Fig. 13. Spectral diagram and fitting of resonant peak wavelength variation with temperature of sensor S-1 at 1 450~1 480 nm
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Table 1. Related parameters of the sensor
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