Polarimetric glucose measurement via digital polarization modulation

Ehsan Hassanpour Yesaghi; Mahsa Nasehi; Lilian Witthauer

doi:10.1117/12.3000164

13 March 2024 Polarimetric glucose measurement via digital polarization modulation

Ehsan Hassanpour Yesaghi, Mahsa Nasehi, Lilian Witthauer

Proceedings Volume PC12850, Optical Diagnostics and Sensing XXIV: Toward Point-of-Care Diagnostics; PC128500F (2024) https://doi.org/10.1117/12.3000164
Event: SPIE BiOS, 2024, San Francisco, California, United States

Conference Poster

Abstract

High precision polarimetry typically employs polarization modulation to enhance sensitivity. Common modulators include electro-optic, acousto-optic, and magneto-optic types. Faraday cells have proven successful as high-performance modulators for measuring glucose concentrations. However, these modulators require high voltage or high current, hindering wearable or implantable device implementation. Liquid crystals (LCs) were suggested as alternatives but introduce impurities and have limited functionality for broadband light required in glucose measurement. This study proposes digital polarization modulation using LC as shutters to detect glucose in physiological concentrations. The absence of power-consuming elements allows for potential miniaturization as a wearable or implantable device.

Citation Download Citation

Ehsan Hassanpour Yesaghi, Mahsa Nasehi, and Lilian Witthauer "Polarimetric glucose measurement via digital polarization modulation", Proc. SPIE PC12850, Optical Diagnostics and Sensing XXIV: Toward Point-of-Care Diagnostics, PC128500F (13 March 2024); https://doi.org/10.1117/12.3000164

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