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Updated: Feb 15, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
Noninvasive glucose monitoring using mid-infrared absorption spectroscopy based on a few wavenumbers
Ryosuke Kasahara1,2, Saiko Kino3, Shunsuke Soyama2
1Ricoh Institute of Information and Communication Technology, Research and Development Division, Ricoh Company, 16-1 Shinei-cho, Yokohama 224-0035, Japan.
Abstract:
A method for performing noninvasive blood glucose measurements was developed. The method is based on mid-infrared absorption spectroscopy and uses only a few wavenumbers to measure blood glucose levels in vivo unconditionally. We found that the regression of blood glucose levels using only three wavenumbers, which were selected using a series cross-validation technique, realized accuracies comparable to those of cases in which a greater number of wavenumbers are used. In addition, we demonstrated the performance of this model through correlations among different types of data.
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