The Combustion Diagnostics and
Environmental Measurements Laboratory
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The Combustion Diagnostics and Environmental Measurements Laboratory |
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Fiber Bragg Gratings for Measurement of
Temperature and Strain
The aim of this research is to develop real-time sensors that can accurately measure structural strain and temperature. Fiber optic Bragg grating sensors reflect light at a specific wavelength determined by the grating spacing. Strain, or temperature-induced strain, changes the grating spacing and hence changes the wavelength of reflected light. Using this property, we have been developing high-speed structural strain sensors. With an understanding of the underlying mechanics of the structure, we can derive structural dynamics, including shape and fundamental frequencies of motion. This project has been funded by the Naval Surface Warfare Center, Carderock, and an SBIR grant in cooperation with Systems Planning and Analysis, Inc. |
Recent publications / papers: Optical Engineering paper, Oct 2002. Ponniah Sivanesan's Ph.D. Dissertation (please email us for this, it's large)
Chris Baldwin's Ph.D. Dissertation (please email us for this, it's large)
Coming soon: Dynamic Shape Measurement of Flexible Structures, Part 1: Theory, to be submitted to the Journal of Lightwave Technology
Dynamic Shape Measurement of Flexible Structures, Part 2: Experiments, to be submitted to the Journal of Lightwave Technology Recent Results: Ponniah Sivanesan's Ph.D. Defense, Spring 2002. Christopher Baldwin's Ph.D. Defense, Fall 2003.
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