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


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
Last Modified: 23 Oct 2019 11:03
Date Deposited: 09 May 2011 11:27
Published Date: 2002-11-07
Authors: Shu, Xuewen
Zhao, Donghui
Liu, Y.
Gwandu, Y.
Floreani, Filip
Zhang, Lin


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