Distributed temperature sensing using a chirped fibre Bragg grating

Won, Pei C., Leng, Jinsong, Lai, Yicheng and Williams, John A.R. (2004). Distributed temperature sensing using a chirped fibre Bragg grating. Measurement science and technology, 15 (8), pp. 1501-1505.

Abstract

A fully distributed temperature sensor consisting of a chirped fibre Bragg grating has been demonstrated. By fitting a numerical model of the grating response including temperature change, position and width of localized heating applied to the grating, we achieve measurements of these parameters to within 2.2 K, 149 µm and 306 µm of applied values, respectively. Assuming that deviation from linearity is accounted for in making measurement, much higher precision is achievable and the standard deviations for these measurements are 0.6 K, 28.5 µm and 56.0 µm, respectively.

Uncontrolled Keywords: distributed temperature sensor, chirped fibre Bragg grating, fibre optic sensors
Published Date: 2004-07
Authors: Won, Pei C.
Leng, Jinsong
Lai, Yicheng
Williams, John A.R.

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