Identical broadband chirped grating interrogation technique for temperature and strain sensing

R.w. Fallon, L. Zhang, A. Gloag, I. Bennion

Research output: Contribution to journalArticlepeer-review

Abstract

The authors propose a simple, low-cost technique for the interrogation of fibre Bragg grating (FBG) sensors. The induced mismatch between two identical broadband fibre chirped gratings is used to provide a mechanism for measuring changes in strain/temperature associated with one grating. A linear relationship with detected optical power is seen, with a 10 nm chirp rate facilitating sensing ranges up to 9000 µɛ and 750°C for strain and temperature change, respectively.
Original languageEnglish
Pages (from-to)705-707
JournalElectronics letters
Volume33
Issue number8
DOIs
Publication statusPublished - 10 Apr 1997

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