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10 December 1996 Liquid crystalline optical fibers for pressure monitoring
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Initial results of experimental studies of light propagation by optical fibers with liquid crystalline cores under hydrostatic pressure conditions are reported. Specially drawn hollow-core fibers (capillary tubes of radii 15 microns) were filled with a liquid crystal mixture. The whole system composed of the fiber and the liquid crystal has been placed in a high pressure chamber designed to sustain pressures up to 100 MPa. The liquid crystalline-core optical fiber acts as an optically anisotropic medium characterized by an index ellipsoid, and can serve as a fiber with easily controlled birefringence. Since hydrostatic pressure generate stress effects occurring in the system, a new class of fiber-optic pressure sensors can be introduced. The paper presents preliminary characteristics of the pressure sensor utilizing liquid crystalline-core fibers. Envisaged areas of applications include pipe-lines, mining instrumentation, process control, and environmental protection.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tomasz R. Wolinski, Wojtek J. Bock, Witold Konopka, Tomasz Nasilowski, and Jan Wojcik "Liquid crystalline optical fibers for pressure monitoring", Proc. SPIE 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII, (10 December 1996);


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