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Micro Fiber Optical Sensor Interrogation Systems for Aerospace Applications

[+] Author Affiliations
Gao Zhi Xiao

National Research Council Canada, Ottawa, ON, Canada

Nezih Mrad

Defense Research and Development Canada, Ottawa, ON, Canada

Paper No. CANEUS2006-11028, pp. 141-145; 5 pages
  • CANEUS 2006: MNT for Aerospace Applications
  • CANEUS2006: MNT for Aerospace Applications
  • Toulouse, France, August 27–September 1, 2006
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4254-1 | eISBN: 0-7918-3787-4
  • Copyright © 2006 by ASME


The emerging field of microsystems technology is enabling the innovative development of a micro optical fiber interrogation system for potential integration into air platforms structural health monitoring and management capabilities. Our efforts in such development is based on micron size optical waveguides using arrayed waveguide gratings (AWG) based demultiplexer for highly multiplexed fiber Bragg grating (FBG) sensor arrays. In this document, a proposed system concept, its operating principle and proposed interrogation methodology are presented. Initial results demonstrate the ability of the system to obtain measurement resolution of 1 pm or better (equivalent to 0.1°C for temperature sensing) and response time as short as two milli-second. Owing to the small size and ruggedness of AWG, it is potentially feasible to fabricate an all solid state (no moving parts), palm size, robust and high-resolution interrogation system that responds to air platform requirements.

Copyright © 2006 by ASME



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