Abstract
A novel technique is proposed for circular birefringence (CB) sensing using a surface plasmon resonance (SPR) prism coupler and differential Mueller matrix polarimetry. In the proposed system, the SPR prism coupler is placed in front of the sample in order to generate a weak-scattering medium model and enhance the sensitivity of the measurement process. The CB properties of the sample are then extracted using a dynamic Stokes-Mueller matrix polarimetry measurement system in the reflectance mode. The practical feasibility of the system is demonstrated by measuring the CB properties of aqueous glucose solutions and glucose phantom solutions containing 2% lipofundin. The oral glucose tolerance tests pilot study was performed on four healthy human volunteers aged between 20 and 25 years old. The experimental results show that the proposed method has a resolution of just 10 mg/dL. In general, the results confirm that the proposed polarimetry-SPR system provides a fastand reliable approach for CB detection and has significant potential for noninvasive glucose monitoring device (NIGMD) applications.
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