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Proceedings Paper

All-fiber liquid crystalline hydrostatic pressure sensor
Author(s): Tomasz R. Wolinski; Andrzej W. Domanski; Wojtek J. Bock
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Paper Abstract

The paper introduces an all-fiber version of the hydrostatic pressure sensor with a chiral nematic liquid crystal film acting as a sensing element. The liquid crystalline film was obtained from a new class of liquid crystalline materials dispersed in a polymer matrix. As light sources, two laser diodes operating at red and infrared wavelengths were used, which were coupled to a compact liquid crystalline optrode. The optrode was placed inside a standard thermally stabilized high-pressure chamber designed to sustain pressures up to 500 MPa. Insertion of the optrode into the chamber was accomplished due to a fiber optic leadthrough system. The all-fiber liquid crystalline hydrostatic pressure sensor offers high response to pressure and, depending on the liquid crystalline optrode used, can be preset for a required range of pressure. Potential areas of applications include pipelines and mining instrumentation, process-control technologies, and environmental protection.

Paper Details

Date Published: 10 March 1994
PDF: 6 pages
Proc. SPIE 2068, Chemical, Biochemical, and Environmental Fiber Sensors V, (10 March 1994); doi: 10.1117/12.170682
Show Author Affiliations
Tomasz R. Wolinski, Warsaw Univ. of Technology (Poland)
Andrzej W. Domanski, Warsaw Univ. of Technology (Poland)
Wojtek J. Bock, Univ. du Quebec a Hull (Canada)

Published in SPIE Proceedings Vol. 2068:
Chemical, Biochemical, and Environmental Fiber Sensors V
Robert A. Lieberman, Editor(s)

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