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

Volume

27

Issue

1

fYear

2015

fDate

Jan.1, 1 2015

Firstpage

58

Lastpage

61

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2361768

Filename

6918414