High Resolution Temperature Insensitive Interrogation Technique for FBG Sensors

Authors

Qiang Wu, Technological University DublinFollow
Yuliya Semenova, Technological University DublinFollow
An Sun, Technological University Dublin
Pengfei Wang, Technological University DublinFollow
Gerald Farrell, Technological University DublinFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

Electrical and electronic engineering

Publication Details

Optics and Laser Technology, v. 42, iss. 4, p. 653-656. 2009.

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.

DOI

https://doi.org/10.1016/j.optlastec.2009.11.005

Recommended Citation

Wu, Q. et al (2009) High Resolution Temperature Insensitive Interrogation Technique for FBG Sensors. Optics and Laser Technology, vol. 42, no. 4, p. 653-656. doi:10.1016/j.optlastec.2009.11.005