Use of visible laser diode: fiber optic sensors in the beverage industry and environmental controls

Van Hoi Pham; Dinh Thuy Chu; Huy Bui; Viet Luc Tran

doi:10.1117/12.263499

10 January 1997 Use of visible-laser-diode fiber optic sensors in the beverage industry and environmental controls

Van Hoi Pham, Dinh Thuy Chu, Huy Bui, Viet Luc Tran

Proceedings Volume 3000, Laser Diode and LED Applications III; (1997) https://doi.org/10.1117/12.263499
Event: Photonics West '97, 1997, San Jose, CA, United States

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.

Citation Download Citation

Van Hoi Pham, Dinh Thuy Chu, Huy Bui, and Viet Luc Tran "Use of visible-laser-diode fiber optic sensors in the beverage industry and environmental controls", Proc. SPIE 3000, Laser Diode and LED Applications III, (10 January 1997); https://doi.org/10.1117/12.263499

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