摘要
The temperature response of fiber Bragg grating sensors has been monitored over a temperature range from 4.2 K to 298 K, especially the temperature sensing in liquid helium environment. It is found that the temperature sensitivity of FBG is dependent on temperature. A thermal response is measured to above 50 K. However, the changes are more complicated from 50 K to 77 K. The linear temperature response is found from 150 K to 298 K. Coating material with larger coefficient of thermal expansion can greatly improve the temperature sensing behavior of FBGs.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 581-583 |
| 页数 | 3 |
| 期刊 | Guangdianzi Jiguang/Journal of Optoelectronics Laser |
| 卷 | 19 |
| 期 | 5 |
| 出版状态 | 已出版 - 5月 2008 |
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