A Dual-Wavelength Fiber Laser Sensor System for Measurement of Temperature and Strain

Author

Liu, Duan ; Ngo, Nam Quoc ; Tjin, Swee Chuan ; Dong, Xinyong

Author_Institution

Nanyang Technol. Univ., Singapore

Volume

19

Issue

15

fYear

2007

Firstpage

1148

Lastpage

1150

Abstract

A strain and temperature-sensing scheme based on a dual-wavelength fiber laser is demonstrated experimentally. By measuring the change in the wavelength separation of the two lasing wavelengths and the shift of any of two lasing wavelengths, the measured strain and temperature are very linear and have a strain sensitivity of 0.15 pm/muepsiv over a range of 0-2400 muepsiv and a temperature sensitivity of 14.3 pm/degC over a range of 22degC-230degC, respectively.

Keywords

fibre lasers; fibre optic sensors; measurement by laser beam; strain measurement; strain sensors; temperature measurement; temperature sensors; dual-wavelength fiber laser sensor; lasing wavelengths; strain measurement; strain sensitivity; temperature 22 degC to 230 degC; temperature measurement; wavelength separation; Capacitive sensors; Erbium-doped fiber lasers; Fiber lasers; Optical fiber polarization; Optical fiber sensors; Sensor systems; Strain measurement; Temperature measurement; Temperature sensors; Wavelength measurement; Erbium-doped fiber (EDF); fiber Bragg grating (FBG); fiber-optic sensors; temperature and strain measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.901128

Filename

4267733