Fig. 1. Distributed optical fiber temperature sensor structure diagram

Fig. 2. Contrast of dispersion offset compensation by different interpolation algorithms

Fig. 3. Flow chart of linear interpolation algorithm

Fig. 4. Distributed optical fiber temperature measurement system

Fig. 5. Raman scattering signals

Fig. 6. Corresponding measurement temperature before and after loss coefficient compensation. (a) Before loss coefficient compensation; (b) after loss coefficient compensation

Fig. 7. Contrast of dispersion compensation effect before and after linear interpolation

Fig. 8. Temperature measurement accuracy before and after dispersion compensation

Fig. 9. Signal errors at different measuring time

Fig. 10. Temperature measurement accuracy before and after self-compensation error