Temperature insensitive measurements of static displacements using a fiber Bragg grating

We report a chirped fiber Bragg grating transducer for the measurement of acceleration, in which a cantilever beam and fiber Bragg grating are used. The cantilever induces strain on the grating resulting in a Bragg grating wavelength modification that is subsequently detected. The output signal is i...

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Bibliographic Details
Published in:Optics express 2003-08, Vol.11 (16), p.1918-1924
Main Authors: Zhu, Yinian, Shum, Ping, Lu, Chao, Lacquet, M, Swart, P, Chtcherbakov, A, Spammer, S
Format: Article
Language:English
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Summary:We report a chirped fiber Bragg grating transducer for the measurement of acceleration, in which a cantilever beam and fiber Bragg grating are used. The cantilever induces strain on the grating resulting in a Bragg grating wavelength modification that is subsequently detected. The output signal is insensitive to temperature variations and for a temperature change from -20 degrees C to 40 degrees C, the output signal fluctuated less than 5 % without any temperature compensation schemes. Because the accelerometer does not utilize the complex demodulation techniques it is potentially inexpensive. For the experimental system a linear output range of 8 g could be detected.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.11.001918