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Applied Optics

Applied Optics


  • Vol. 43, Iss. 17 — Jun. 10, 2004
  • pp: 3408–3414

Phase-Sensitive Optical Low-Coherence Reflectometry for the Detection of Analyte Concentrations

Kirill V. Larin, Taner Akkin, Rinat O. Esenaliev, Massoud Motamedi, and Thomas E. Milner  »View Author Affiliations

Applied Optics, Vol. 43, Issue 17, pp. 3408-3414 (2004)

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Optical techniques may potentially be used for noninvasive glucose sensing. We investigated the application of phase-sensitive optical low-coherence reflectometry (PS-OLCR) to the measurement of analyte concentrations. The dependence of the PS-OLCR signal on the concentration of various analytes, including aqueous solutions of glucose, calcium chloride, magnesium chloride, sodium chloride, potassium chloride, potassium bicarbonate, urea, bovine serum albumin, and bovine globulin, were determined in clear and turbid media. Obtained results demonstrated (1) a high degree of sensitivity and accuracy of the phase measurements of analyte concentrations with PS-OLCR; (2) a concentration-dependent change in the phase-shift for glucose that is significantly greater than that of other analytes sampled over the same physiological range; and (3) a high submillimolar sensitivity of PS-OLCR for the measurement of glucose concentration. Further exploration of the application of PS-OLCR to the noninvasive, sensitive, and specific monitoring of glucose concentration seems warranted.

© 2004 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(170.1470) Medical optics and biotechnology : Blood or tissue constituent monitoring
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine

Kirill V. Larin, Taner Akkin, Rinat O. Esenaliev, Massoud Motamedi, and Thomas E. Milner, "Phase-Sensitive Optical Low-Coherence Reflectometry for the Detection of Analyte Concentrations," Appl. Opt. 43, 3408-3414 (2004)

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