Monitoring of alkane vapor concentrations with polyimide lightguides

R. P. Podgorsek; Hilmar Franke

doi:10.1117/12.185153

25 August 1994 Monitoring of alkane vapor concentrations with polyimide lightguides

R. P. Podgorsek, Hilmar Franke

Proceedings Volume 2212, Linear and Nonlinear Integrated Optics; (1994) https://doi.org/10.1117/12.185153
Event: Integrated Optoelectronics '94, 1994, Lindau, Germany

Abstract

Planar polyimide light guides can be used for the optical detection of various vapor concentrations. Therefore the birefringence of the light guide is monitored as a function of the actual vapor pressure. Using this principal several vapor concentrations of n-heptane and n- octane have been determined. Similar dynamic behavior can be observed for both components only differing in time constants. Furthermore the detection of n-heptane in a mixture with iso- octane can be realized. The waveguide sensor shows a sensitivity only to n-heptane and not so iso-octane vapors. The determination of the n-heptane concentration is not affected by the presence of iso-octane.

Citation Download Citation

R. P. Podgorsek and Hilmar Franke "Monitoring of alkane vapor concentrations with polyimide lightguides", Proc. SPIE 2212, Linear and Nonlinear Integrated Optics, (25 August 1994); https://doi.org/10.1117/12.185153

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