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Proceedings Paper

Low-cost fiber grating sensor demodulator using a temperature-compensated fiber grating spectral filter
Author(s): Eric Udd; Kelli Corona-Bittick; Jim Dorr; Kerry T. Slattery
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Paper Abstract

A simple, potentially low cost fiber grating demodulation is described that can be used to measure very fast strain events. The unit consists of a broadband light emitting diode light source that is used to illuminate a fiber grating. The narrow band reflected light signal is directed toward a broadband chirped fiber grating whose transmission and reflection is monitored by a pair of receivers. The ratioed output can be used to monitor fast events. An example of using this sensor to support impact testing is given.

Paper Details

Date Published: 2 September 1997
PDF: 4 pages
Proc. SPIE 3180, Third Pacific Northwest Fiber Optic Sensor Workshop, (2 September 1997); doi: 10.1117/12.285606
Show Author Affiliations
Eric Udd, Blue Road Research (United States)
Kelli Corona-Bittick, Production Products and Sales Inc. (United States)
Jim Dorr, Duke and Associates (United States)
Kerry T. Slattery, Duke and Associates (United States)

Published in SPIE Proceedings Vol. 3180:
Third Pacific Northwest Fiber Optic Sensor Workshop
Eric Udd; Chuck C. Jung, Editor(s)

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