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Proceedings Paper

Using FBG sensor array for monitoring structural security
Author(s): Rizhong Li; Junbin Huang; Bo Tang; Hongcan Gu
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Paper Abstract

A method based on FBG sensor array to monitoring large structure's security state is described. A configuration combing a fiber Fabry-Perot tunable filter and a fiber Fabry-Perot interferometer is used to interrogate FBG sensors. The strain signal and acceleration signal can be obtained from the some one FBG sensor, and the number of DFB sensors is reduced to half. The fiber Fabry-Perot tunable filter-based system has the capability to interrogate large number of DFB sensors, whilst obtaining absolute Bragg wavelength with pm resolution. A demonstration system with 4 DFB sensors is presented, which obtains DFB sensor's direct strain value and achieves sub-microstrain resolution at 300Hz interrogating rate. With fast interrogate rate, wide band acceleration signal can also be achieved.

Paper Details

Date Published: 23 February 2009
PDF: 5 pages
Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 72780A (23 February 2009); doi: 10.1117/12.811309
Show Author Affiliations
Rizhong Li, Naval Univ. of Engineering (China)
Junbin Huang, Naval Univ. of Engineering (China)
Bo Tang, Naval Univ. of Engineering (China)
Hongcan Gu, Naval Univ. of Engineering (China)

Published in SPIE Proceedings Vol. 7278:
Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors
Dieter Stefan Jäger; Deming Liu; Ping Shum, Editor(s)

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