Fig. 1. Fiber optic anemometer probe. (a) Microscopic photograph; (b) schematic of structure

Fig. 2. Experimental equipment for measuring wind speed

Fig. 3. Interference spectra of anemometer at different temperatures

Fig. 4. Relationship between wavelength of anemometer and temperature

Fig. 5. Interference spectra of anemometer under different light source power

Fig. 6. Relationship among wavelength, temperature of anemometer, and power of light source

Fig. 7. Relationship between wavelength of anemometer and square of wind speed under power of 5 mW light source

Fig. 8. Response characteristics of fiber optic anemometer. (a) Interference spectra of anemometers at different wind speeds; (b) variation curves of wavelength drift and sensitivity of anemometer (cavity length is 17 μm) with wind speed

Fig. 9. Response curves of anemometer to wind speed under different light source power

Fig. 10. Response curves of anemometers with different cavity lengths to wind speed

Fig. 11. Dynamic response curve of anemometer (cavity length is 17 μm)