Abstract
A high temperature strain sensor based on the fiber optic extrinsic Fabry-Perot interferometer(EFPI) is presented. A section of hollow capillary is spliced with two sections of cleaved single-mode fibers to form an extrinsic Fabry-Perot cavity. Experimental results show that the sensor can work stably at 1000℃. The sensitivity of the cavity length change and the strain sensitivity are 0.17nm/με and ±1με, respectively. The linearity is 0.99998. The sensor has many advantages, such as compact in construction, simple fabricating process and low cost, which is a reliable and excellent high temperature strain sensor.
| Original language | English |
|---|---|
| Pages (from-to) | 423-426 |
| Number of pages | 4 |
| Journal | Guangxue Jishu/Optical Technique |
| Volume | 43 |
| Issue number | 5 |
| Publication status | Published - 1 Sept 2017 |
Keywords
- EFPI
- Fiber optical white-light interferometry
- High temperature
- Strain