Title :
In-Fiber Gratings for Simultaneous Monitoring Temperature and Strain in Ultrahigh Temperature
Author :
Hang Zhou Yang ; Xue Guang Qiao ; Yu Peng Wang ; Ali, M.M. ; Man Hong Lai ; Kok Sing Lim ; Ahmad, H.
Author_Institution :
Sch. of Phys., Northwest Univ., Xi´an, China
Abstract :
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.
Keywords :
Bragg gratings; fibre optic sensors; optical fibre fabrication; strain sensors; temperature sensors; Bragg wavelength; in-fiber gratings; regenerated gratings; single-mode fiber; strain monitoring; strain sensitivity; temperature 25 degC to 900 degC; temperature monitoring; ultrahigh temperature environment; wavelength 1304 nm; wavelength 1547 nm; Fiber gratings; Optical fiber sensors; Strain; Strain measurement; Temperature measurement; Temperature sensors; Fiber Bragg gratings; Regenerated grating; Ultra-high temperature; regenerated grating; temperature and strain sensing; ultra-high temperature;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2361768
