1. An improved fiber optic pressure and temperature sensor for downhole application.
- Author
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S H Aref, M I Zibaii, and H Latifi
- Subjects
DETECTORS ,PRESSURE ,FIBER optics ,HIGH pressure (Science) ,DIGITAL signal processing - Abstract
We report on the fabrication of a high pressure extrinsic Fabry-Perot interferometric (EFPI) fiber optic sensor for downhole applications by using a mechanical transducer. The mechanical transducer has been used for increasing the pressure sensitivity and the possibility of installation of the sensor downhole. The pressure-temperature cross-sensitivity (PTCS) problem has been solved by replacing the reflecting fiber with a metal microwire in the EFPI sensor. In this way the PTCS coefficient of the sensor was decreased from 47.25 psi degC[?]1 to 7 psi degC[?]1. By using a new EFPI design, a temperature sensor was fabricated. Further improvement in the pressure and temperature sensor has been done by developing fabrication technique and signal processing. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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