Low-cost fiber grating sensor demodulator using a temperature-compensated fiber grating spectral filter

Eric Udd; Kelli Corona-Bittick; Jim Dorr; Kerry T. Slattery

doi:10.1117/12.285606

2 September 1997 Low-cost fiber grating sensor demodulator using a temperature-compensated fiber grating spectral filter

Eric Udd, Kelli Corona-Bittick, Jim Dorr, Kerry T. Slattery

Author Affiliations +

Proceedings Volume 3180, Third Pacific Northwest Fiber Optic Sensor Workshop; (1997) https://doi.org/10.1117/12.285606
Event: Third Pacific Northwest Fiber Optic Sensor Workshop, 1997, Troutdale, OR, United States

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.

Citation Download Citation

Eric Udd, Kelli Corona-Bittick, Jim Dorr, and Kerry T. Slattery "Low-cost fiber grating sensor demodulator using a temperature-compensated fiber grating spectral filter", Proc. SPIE 3180, Third Pacific Northwest Fiber Optic Sensor Workshop, (2 September 1997); https://doi.org/10.1117/12.285606

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