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Proceedings Paper

Use of visible laser diode: fiber optic sensors in the beverage industry and environmental controls
Author(s): Van Hoi Pham; Dinh Thuy Chu; Huy Bui; Viet Luc Tran
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Paper Abstract

The fiber-optic refractometer using visible laser diodes with wavelengths of 650 divided by 670 nm for the liquid refractive-index measurement is presented. The refractive- index measures by fiber-optic sensors of the connected configuration for different liquids with refractive indices from 1.33 to 1.5 have given the accuracy of 5.10-3. The fiber-optic refractometer was performanced for the distinguish of the salt or sugar content in the mixtures with range of 10-3 and 5.10-4, respectively. These refractometers are already to use for the sugar control systems of beverage industry and salt-water environment.

Paper Details

Date Published: 10 January 1997
PDF: 6 pages
Proc. SPIE 3000, Laser Diode and LED Applications III, (10 January 1997); doi: 10.1117/12.263499
Show Author Affiliations
Van Hoi Pham, Institute of Materials Science/NCST (Vietnam)
Dinh Thuy Chu, Institute of Materials Science/NCST (Vietnam)
Huy Bui, Institute of Materials Science/NCST (Vietnam)
Viet Luc Tran, International Training Institute for Material Sciences (Vietnam)

Published in SPIE Proceedings Vol. 3000:
Laser Diode and LED Applications III
Kurt J. Linden, Editor(s)

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