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Proceedings Paper

Micro-size optical fibre strain interrogation system
Author(s): Nezih Mrad; Gaozhi Xiao; Honglei Guo
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Paper Abstract

Within several countries, the military is undergoing significant economic pressure to extend the use of its air fleet beyond its established design life. The availability of low weight, small size, reliable and cost-effective technologies to detect and monitor incipient damage and to alert prior to catastrophic failures is critical to sustain operational effectiveness. To enable the implementation of distributed and highly multiplexed optical fiber sensors networks to aerospace platforms, the data acquisition (interrogation) system has to meet small size and low weight requirements. This paper reports on our current development of micro-sized Echelle Diffractive Gratings (EDG) based interrogation system for strain monitoring of serially multiplexed fibre Bragg grating sensors. The operation principle of the interrogator and its suitability for strain measurements is demonstrated. Static load measurements obtained using this system are compared to those acquired using a optical multi-wavelength meter and are found to have strong correlation.

Paper Details

Date Published: 11 April 2008
PDF: 6 pages
Proc. SPIE 6933, Smart Sensor Phenomena, Technology, Networks, and Systems 2008, 693304 (11 April 2008); doi: 10.1117/12.776661
Show Author Affiliations
Nezih Mrad, Defence R&D Canada (Canada)
Gaozhi Xiao, National Research Council (Canada)
Honglei Guo, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 6933:
Smart Sensor Phenomena, Technology, Networks, and Systems 2008
Wolfgang Ecke; Kara J. Peters; Norbert G. Meyendorf, Editor(s)

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