This article reports on an optical fiber-based sensing system for carrying out the simultaneous measurement of temperature and strain. The sensor design is based on the combination of active doped optical fiber and fiber gratings. Erbium/ytterbium co-doped fiber is used to meet the requirements for both high temperature responsivity and small sensor size to address smart structure applications. The temperature dependence of the amplified spontaneous emission power under different pump wavelengths is used as the basis of the sensor and an optical reference to enhance the measurement resolution is discussed. The feasibility of this technique for simultaneous measurement of temperature and strain is demonstrated.
REFERENCES
1.
A. D.
Kersey
, T. A.
Berkoff
, and W. W.
Morey
, Opt. Lett.
18
, 72
(1993
).2.
M. G.
Xu
, J. L.
Archambault
, L.
Reekie
, and J. P.
Dakin
, Electron. Lett.
30
, 1085
(1994
).3.
S. E.
Kanellopoulos
, V. A.
Handerek
, and A. J.
Rogers
, Opt. Lett.
20
, 333
(1995
).4.
H. J.
Patrick
, G. M.
Williams
, A. D.
Kersey
, J. R.
Pedrazzani
, and A. M.
Vengsarkar
, IEEE Photonics Technol. Lett.
8
, 1223
(1996
).5.
H. Singh and J. Sirkis, Conference Proceedings OFS-11, Japan, May, 1996, pp. 108–111.
6.
7.
E.
Maurice
, G.
Monnom
, B.
Dussardier
, A.
Saissy
, D. B.
Ostrowsky
, and G. W.
Baxter
, Appl. Opt.
34
, 8019
(1995
).8.
9.
A. Orthonos, in Optical Fiber Sensor Technology, edited by K. T. V. Grattan and B. T. Meggitt (Kluwer Academic, Dordrecht, 2000), pp. 79–187.
10.
K. T. V.
Grattan
, Z. Y.
Zhang
, T.
Sun
, Y.
Shen
, L.
Tong
, and Z.
Ding
, Meas. Sci. Technol.
12
, 981
(2001
).11.
S. A.
Wade
, D. I.
Forsyth
, K. T. V.
Grattan
, and Q.
Guofu
, Rev. Sci. Instrum.
72
, 3186
(2001
).
This content is only available via PDF.
© 2002 American Institute of Physics.
2002
American Institute of Physics
You do not currently have access to this content.
