Strain-independent temperature measurement by use of a fluorescence intensity ratio technique in optical fiber.
The strain sensitivity of the fluorescence intensity ratio temperature-sensing technique has been measured to be (2 +/- 3) x 10(-4)%/muepsilon in Yb3+-doped fiber, implying a temperature-to-strain cross sensitivity of (2 +/- 3) x 10(-4) degrees C/muepsilon. The near-zero strain sensitivity means that this optical-fiber sensor technique is well suited for temperature measurement in strain-affected environments.
Wade
S A
SA
Optical Technology Research Laboratory (F119), Victoria University, P.O. Box 14428, Melbourne City MC, Victoria 8001, Australia.
Collins
S F
SF
Grattan
K T
KT
Baxter
G W
GW