20 January 1994 Polymer lightguides as optical sensors
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Polymer Lightguides of polyimide and amorphous Teflon are used for the measurement of various vapor concentrations ranging from water to organic solvents like acetone. The physical principles of measurement used are monitoring lightguide birefringence and metal film enhanced leaky mode spectroscopy. Dynamic measurements are used in order to also analyze mixed atmospheres.
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Hilmar Franke, R. P. Podgorsek, Martin Osterfeld, "Polymer lightguides as optical sensors", Proc. SPIE 2042, Photopolymers and Applications in Holography, Optical Data Storage, Optical Sensors, and Interconnects, (20 January 1994); doi: 10.1117/12.166317; https://doi.org/10.1117/12.166317

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