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10 March 1994 All-fiber liquid crystalline hydrostatic pressure sensor
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Proceedings Volume 2068, Chemical, Biochemical, and Environmental Fiber Sensors V; (1994)
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States
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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tomasz R. Wolinski, Andrzej W. Domanski, and Wojtek J. Bock "All-fiber liquid crystalline hydrostatic pressure sensor", Proc. SPIE 2068, Chemical, Biochemical, and Environmental Fiber Sensors V, (10 March 1994);

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