Fiber-optic hydrostatic pressure measurement employing deformationeffects in a liquid crystalline cell

摘要

The paper presents a further development of a fiber-optichydrostatic pressure measurement employing pressure-induced deformationeffects occurring in a liquid crystalline cell. This approach isparticularly suitable for measurement of hydrostatic pressure up to 2MPa and utilizes strong rotatory power occurring in chiral nematicliquid crystals. Results indicate that this method of hydrostaticpressure measurement offers high response to pressure with reducedtemperature sensitivity and, depending on the liquid crystalline cellused, can be pre-set for a required range of pressure