Abstract
This paper presents a miniature fiber optic sensor for intravascular blood temperature measurements. Based on the Fabry–Perot interferometric principle, the sensor is fabricated by using chemical etching and thermal deposition. Before the animal test, static temperature calibration experiments are performed to characterize the sensor's sensitivity, linearity, and hysteresis. A swine model is selected to perform the in-vivo experiment. During the in-vivo experiment, the swine intravascular blood temperature is measured at different locations in coronary arteries to demonstrate the sensor's performance. The sensor's usage in the thermal angioplasty application is successfully presented by capturing the rise and drop of local intravascular blood temperature variations.
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