OPTICAL DEVICE FOR MEASURING FLUID PRESSURE

摘要

This invention relates to an optical device for measuring the pressure variations of fluid in a conduit. The device includes an optical source for emitting incident light; an optical fibre sensor including an interferometer for modulating the incident light; an output detector for providing an electrical output signal representative of the phase variations in the modulated light detected from the interferometer; and locating means for locating the sensor proximate a wall of a fluid conduit such that deformation in the wall of the conduit can be measured by the sensor. It is envisaged that the device will be particularly useful as a blood pressure manometer.