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

In this letter, a pair of regenerated gratings with Bragg wavelengths of 1547 and 1304 nm in a single piece of singlemode fiber has been fabricated for simultaneous monitoring of temperature and strain in ultrahigh temperature environment. A 3 × 3 matrix is used to characterize the cross sensitivity...

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Bibliographic Details
Published in:IEEE photonics technology letters 2015-01, Vol.27 (1), p.58-61
Main Authors: Yang, Hang Zhou, Qiao, Xue Guang, Wang, Yu Peng, Ali, Muhammad Mahmood, Lai, Man Hong, Lim, Kok Sing, Ahmad, Harith
Format: Article
Language:English
Subjects:
Fiber Bragg gratings
Fiber gratings
Optical fiber sensors
Regenerated grating
Strain
Strain measurement
temperature and strain sensing
Temperature measurement
Temperature sensors
Ultra-high temperature
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Summary:In this letter, a pair of regenerated gratings with Bragg wavelengths of 1547 and 1304 nm in a single piece of singlemode fiber has been fabricated for simultaneous monitoring of temperature and strain in ultrahigh temperature environment. A 3 × 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 με and 4.1 °C at the ranges of 0-1000 με and 25 °C- 900 °C, respectively.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2014.2361768