Journal
OPTICS LETTERS
Volume 43, Issue 11, Pages 2503-2506Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.43.002503
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Funding
- National Science Foundation (NSF) [1400100]
- University of Georgia (UGA) [3375]
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A fiber-Bragg-grating-(FBG)-based sensor is a very popular fiber optic sensor due to its simplicity, mature fabrication technology, and sensitivity to a number of physical stimuli. However, due to the stiff nature of optical fiber, it is impossible to heavily stretch a FBG sensor. A stretchable sensor is highly desired in soft robotics, human motion detection, and biomedical applications, which could involve motions like tension, bending, and twisting. In this Letter, we demonstrate a stretchable FBG-based fiber optic sensor by embedding a FBG-written optic fiber sinusoidally in a soft silicone film at an off-center position. This unique structure enables 30% of elongation in length that facilitates tension, bending, and twisting measurement. (C) 2018 Optical Society of America
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