5 October 2009 Temperature insensitive accelerometer based on a strain-chirped FBG
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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75033R (2009) https://doi.org/10.1117/12.835387
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
Abstract
A novel accelerometer based on a strain-chirped optical fiber Bragg grating (FBG) is proposed. The FBG is glued in a slanted direction onto the lateral side of a right-angled triangle cantilever beam with a mass bonded on its free end. Vertical acceleration applied to the cantilever beam leads to a uniform bending along the beam length. As a result, the FBG is chirped and its reflection bandwidth changes linearly with the applied acceleration. A high sensitivity of 0.684 nm/g has been achieved in the experiment. This sensor is temperature insensitive, owning to the temperatureindependence nature of reflection bandwidth of the FBG.
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Wenjun Zhou, Wenjun Zhou, Xinyong Dong, Xinyong Dong, Kai Ni, Kai Ni, C. C. Chan, C. C. Chan, P. Shum, P. Shum, } "Temperature insensitive accelerometer based on a strain-chirped FBG", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033R (5 October 2009); doi: 10.1117/12.835387; https://doi.org/10.1117/12.835387
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