A system for full Stokes vector measurement for low concentration glucose sensing

Quoc-Hung Phan; Yu-Lung Lo

doi:10.1117/12.2212605

16 March 2016 A system for full Stokes vector measurement for low concentration glucose sensing

Quoc-Hung Phan, Yu-Lung Lo

Proceedings Volume 9754, Photonic Instrumentation Engineering III; 975411 (2016) https://doi.org/10.1117/12.2212605
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

A high performance system for full Stokes vector measurements was developed. The proposed system comprised a polarization scanning generator (PSG) and a high accuracy polarization state analyzer (PSA) was proposed. The PSG generated full state of polarization of light by using voltage driven electro-optics modulator without using any mechanical moving parts. The PSA was employed to record the intensity of output polarized lights in a high speed manner. The accuracy of proposed system was 10-4 for all Stokes vector (S_0, S₁, S₂, S₃) measurements in the full state of polarization of lights. An application of proposed system for low concentration glucose in aqueous solution sensing with/without scattering effects was demonstrated. The sensitivity of the optical rotation angle of CB property to changes in the concentration of glucose sample was examined over the range from 0 to 0.5g/dl. The results confirm that the proposed system is able to detect glucose at fine concentration of 0.02g/dl. The linear variation of the optical rotation angle and different glucose concentration at different scattering effects was obtained. In general, the new measurement system proposed in this study provided a fast and reliable method to measure all Stokes vectors and its potential applications in biological sensing.

Citation Download Citation

Quoc-Hung Phan and Yu-Lung Lo "A system for full Stokes vector measurement for low concentration glucose sensing", Proc. SPIE 9754, Photonic Instrumentation Engineering III, 975411 (16 March 2016); https://doi.org/10.1117/12.2212605

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