Effectively simultaneous temperature and strain measurement utilising a dual-grating sensor formed by type IA and type IIA FBGs

Shu, Xuewen, Zhao, Donghui, Liu, Y., Gwandu, Y., Floreani, Filip and Zhang, Lin (2002). Effectively simultaneous temperature and strain measurement utilising a dual-grating sensor formed by type IA and type IIA FBGs. IN: Proceeding of the 1st IEEE international conference on sensors. IEEE.

Abstract

In this paper, we report a systematic investigation of the dependence of both temperature and strain sensitivities on the jiber Bragg grating (FBG) type, including the wellknown Type I, Type IIA, and a new type which we have designated Type 1.4, using both hydrogen-Ji-ee and hydrogenated B/Ge codoped jibers. We have identijed distinct sensitivity characteristics for each grating type, and we have utilised them to implement a novel dual-grating, duul-parameter sensor device. Three dual-grating sensing schemes with different combinations of gruting types have been constructed and compared. The Type IA-Type IIA combination exhibits the best pe$ormance and is superior to that of previously reported gruting-based structures. The characteristics of the measurement errors in such dualgrating sensor systems is also presented in detail.

Event Title: 1st IEEE International Conference on Sensors (IEEE Sensors 2002)
Event Type: Other
Event Location: Orlando
Event Dates: 2002-06-12 - 2002-06-14
Uncontrolled Keywords: Fiber Bragg grating, fiber optical sensor, temperature, sensitivity, strain sensitivity, simultaneous measurement
ISBN: 0780374541
Published Date: 2002-11-07
Authors: Shu, Xuewen
Zhao, Donghui
Liu, Y.
Gwandu, Y.
Floreani, Filip
Zhang, Lin

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