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Proceedings Paper

A novel optical fiber sensor for evaluating the exposure threshold of the photocurable resin composites
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Paper Abstract

The purpose of this study was to develop a novel optical fiber sensor for evaluating the exposure threshold of the photocurable resin composites. The method was founded on the leaking mode mechanism of the optical fiber liquid level sensor and the material absorbance theory. In this research, a new fiber sensor, which was made of the same photocurable resin composite and cured to its fully cured state, was developed to measure the liminal exposure time for a certain cure depth according to the difference between the refractive index of the cured and that of uncured photocurable resin composite. The relevant exposure intensity can be computed by Beer-Lambert law. By this way, we can evaluate the exposure threshold. The photocurable epoxy acrylate was researched in this experiment. The experiment revealed the method can provide an unambiguous exposure threshold with low cost and easy implementation.

Paper Details

Date Published:
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Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 71571Y; doi: 10.1117/12.807027
Show Author Affiliations
Peng LI, Nanjing Univ. of Aeronautics and Astronautics (China)
Zhimin ZHAO, Nanjing Univ. of Aeronautics and Astronautics (China)
Xiaoqin HONG, Nanjing Univ. of Aeronautics and Astronautics (China)
Lexin WANG, Nanjing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 7157:
2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications

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