Distributed temperature sensing using a chirped fibre Bragg grating

Pei C. Won, Jinsong Leng, Yicheng Lai, John A.R. Williams

Research output: Contribution to journalArticlepeer-review


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. © 2004 IOP Publishing Ltd.

Original languageEnglish
Pages (from-to)1501-1505
Number of pages5
JournalMeasurement Science and Technology
Issue number8
Publication statusPublished - Jul 2004


  • chirped fibre Bragg grating
  • distributed temperature sensor
  • fibre optic sensors


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