High resolution temperature insensitive interrogation technique for FBG sensors

Wu, Qiang, Semenova, Yuliya, Sun, An, Wang, Pengfei and Farrell, Gerald (2010) High resolution temperature insensitive interrogation technique for FBG sensors. Optics and Laser Technology, 42 (4). pp. 653-656. ISSN 0030-3992

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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.

Item Type:	Article
Uncontrolled Keywords:	ratiometric system, FBG, edge filter
Subjects:	F300 Physics H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Ay Okpokam
Date Deposited:	26 May 2015 15:16
Last Modified:	12 Oct 2019 19:07
URI:	http://nrl.northumbria.ac.uk/id/eprint/22589

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