High resolution temperature insensitive interrogation technique for FBG sensors

Qiang Wu, Yuliya Semenova, An Sun, Pengfei Wang, Gerald Farrell

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

In this letter, we propose a high resolution temperature insensitive interrogation technique for FBG sensors where one FBG acts as an edge filter to interrogate a separate FBG sensor. A high resolution of better than 5 με in strain measurement range from 0 to 1100 με and the best resolution of better than 1 με were verified by experiments. An error of only ±2.2 με is achieved over a temperature range from 15 to 50 °C, indicating that this strain interrogation technique is temperature insensitive. Using an altered system configuration, the temperature was also measured simultaneously with a resolution better than 0.2 °C.
Original languageEnglish
Pages (from-to)653-656
JournalOptics and Laser Technology
Volume42
Issue number4
DOIs
Publication statusPublished - Jun 2010

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