1. In-Fiber Gratings for Simultaneous Monitoring Temperature and Strain in Ultrahigh Temperature
- Author
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Harith Ahmad, Kok-Sing Lim, Yupeng Wang, Xueguang Qiao, Man-Hong Lai, Hangzhou Yang, and Muhammad Mahmood Ali
- Subjects
Fiber gratings ,Materials science ,Strain (chemistry) ,business.industry ,Temperature measurement ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Wavelength ,Fiber Bragg grating ,Fiber optic sensor ,Optoelectronics ,Fiber ,Sensitivity (control systems) ,Electrical and Electronic Engineering ,business - Abstract
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 $3\times 3$ 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 \varepsilon $ and 4.1 °C at the ranges of 0–1000 $\mu \varepsilon $ and 25 °C–900 °C, respectively.
- Published
- 2015
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