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Proceedings Paper

Integrated optic biosensor for environmental monitoring
Author(s): Anthony A. Boiarski; Richard W. Ridgway; James R. Busch; G. Turhan-Sayan; Larry S. Miller
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Paper Abstract

An integrated-optic biosensor monitors the concentration of liquid pollutants on the surface of a planar substrate composing single-mode channel waveguides. The concept uses a Mach- Zehnder interferometer structure to measure thickness and/or refractive index changes on the waveguide surface. These changes occur as pollutant molecules interact directly with the interferometer's active arm or with a hydrophobic coating on the surface of the arm. Interferometer output data were obtained for various solutions including PPM levels of benzene and toluene in water. Theoretical analysis indicated that a hydrophobic coating on the waveguide would provide sensor specificity and detect pollutants at PPB levels.

Paper Details

Date Published: 1 March 1992
PDF: 15 pages
Proc. SPIE 1587, Chemical, Biochemical, and Environmental Fiber Sensors III, (1 March 1992); doi: 10.1117/12.56539
Show Author Affiliations
Anthony A. Boiarski, Battelle Memorial Institute (United States)
Richard W. Ridgway, Battelle Memorial Institute (United States)
James R. Busch, Battelle Memorial Institute (United States)
G. Turhan-Sayan, Battelle Memorial Institute (United States)
Larry S. Miller, Battelle Memorial Institute (United States)

Published in SPIE Proceedings Vol. 1587:
Chemical, Biochemical, and Environmental Fiber Sensors III
Robert A. Lieberman, Editor(s)

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