Abstract
The theoretical analysis and experimental study of the influence of soil temperature on vibration signal is carried out in the optical fiber warning system based on Rayleigh backscattering.Elastic half-space theory and optical fiber sensing theory is applied in the analysis of soil vibration. The influence of soil temperature on vibration signal is explained and then the theoretical model is established and analyzed. In order to demonstrate the model, an experimental measurement with 5km-long single-mode sensing fiber is performed. The experimental results show that the peak optical power of soil vibration signal increases with the rise of the soil temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 420-423 and 430 |
| Journal | Guangxue Jishu/Optical Technique |
| Volume | 42 |
| Issue number | 5 |
| Publication status | Published - 1 Sept 2016 |
Keywords
- Distributed optical fiber sensor
- Optical fiber communication technology
- Rayleigh backscattering
- Soil temperature
- Vibration signal