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Proceedings Paper

Evaluation of polymeric thin film waveguides as chemical sensors
Author(s): Elizabeth M. Bowman; Lloyd W. Burgess
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Paper Abstract

Polymeric optical waveguides were employed as sensors, based on the chemical interaction of the polymer with its environment. As the polymer preferentially absorbs chemicals from a sample matrix, the waveguiding properties of the polymeric film change. These changes in the refractive index and the thickness of the film are expressed as shifts in the waveguide propagation modes, which can be monitored to provide a very reproducible sensor signal. Because the waveguides are typically less than one micron thick, these sensors also have short response rates. An evaluation of the responses of several polymeric thin film waveguides and their cross sensitivities is presented.

Paper Details

Date Published: 1 March 1991
PDF: 12 pages
Proc. SPIE 1368, Chemical, Biochemical, and Environmental Fiber Sensors II, (1 March 1991); doi: 10.1117/12.24794
Show Author Affiliations
Elizabeth M. Bowman, Univ. of Washington (United States)
Lloyd W. Burgess, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 1368:
Chemical, Biochemical, and Environmental Fiber Sensors II
Robert A. Lieberman; Marek T. Wlodarczyk, Editor(s)

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