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A surface-micromachined optical self-homodyne polarimetric sensor for noninvasive glucose monitoring

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3 Author(s)
Chuan Pu ; Dept. of Appl. & Eng. Phys., Cornell Univ., Ithaca, NY, USA ; Zuhua Zhu ; Lo, Yu‐Hwa

A surface micromachined, highly sensitive optical polarimetric sensor using a self-homodyne coherent detection method has been demonstrated. By detecting the small polarization rotation of polarized laser light passing through a glucose-containing fluid, this sensor is suitable for noninvasive glucose monitoring for diabetes patients. A resolution glucose level of 75 mg/dl has been obtained, with a 0.9956 correlation coefficient between the reference and the measured values. This polarimeter has the advantages of full system integration and compatibility with silicon processing industry, which makes an integrated, low-cost noninvasive glucose sensor feasible.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 2 )