In-Fiber Gratings for Simultaneous Monitoring Temperature and Strain in Ultrahigh Temperature

作者：Yang, Hang Zhou^*; Qiao, Xue Guang; Wang, Yu Peng; Ali, Muhammad Mahmood; Lai, Man Hong; Lim, Kok Sing; Ahmad, Harith

来源：IEEE Photonics Technology Letters, 2015, 27(1): 58-61.

DOI：10.1109/LPT.2014.2361768

• Fiber Bragg gratings
• regenerated grating
• temperature and strain sensing
• ultra-high temperature

In this letter, a pair of regenerated gratings with Bragg wavelengths of 1547 and 1304 nm in a single piece of single-mode fiber has been fabricated for simultaneous monitoring of temperature and strain in ultrahigh temperature environment. A 3 x 3 matrix is used to characterize the cross sensitivity of the proposed sensor in which the strain sensitivity varies with temperature change. The proposed structure exhibits the deviation of 28.3 mu epsilon and 4.1 degrees C at the ranges of 0-1000 mu epsilon and 25 degrees C-900 degrees C, respectively.

• 出版日期2015-1-1
• 单位西北大学