Conference Publication Details
Mandatory Fields
Poeggel, S,Tosi, D,Leen, G,Lewis, E,
Low Drift and High Resolution Miniature Optical Fiber combined Pressure- and Temperature Sensor for Cardio-Vascular and Other Medical Applications
Optional Fields
A fiber optic Extrinsic Fabry-Perot Interferometer (EFPI) including an internal fully integrated Fibre Bragg Grating (FBG) for application in cardiovascular pressure detection is presented. The combination of EFPI and FBG sensing elements allows the measurement of temperature and pressure at the same time, as well as the compensation of cross-effects. This sensor is entirely fabricated of quartz glass and is a result of a novel design and fabrication process. The sensor was tested in simulated in-vivo biomedical pressure devices, i.e. a cardiovascular pressure simulator that replicates human pressure patterns related to heartbeat. A resolution of 0 : 1 mm Hg and a drift of < 1 mm Hg in over 1 hour at a frequency of 5 0 Hz was achieved. Tests were performed at the Polymer Core Center, within Cleveland Clinic (Ohio, USA). The small sensor overall diameter of 2 0 0 mu m allows in-vivo application for temperature-compensated pressure detection of aortic, arterial and ventricular pressure patterns.
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