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期刊论文
Simultaneous Measurement of Down-Hole High Pressure and Temperature With a Bulk-Modulus and FBG Sensor
IEEE PHOTONICS TECHNOLOGY LETTERS 11(2002)1584-1586，-0001，（）：
A free active element bulk-modulus-based fiber Bragg grating (FBG) sensor for down-hole pressure and temperature measurement is presented. With a differential measurement method and an isosceles triangle cantilever structure, problems of cross-sensitivity and chirped-signal in FBG sensors are solved. Simulation results indicate that the measurement sensitivity in measuring pressure and temperature is estimated to be ～8. 5 pm/MPa in a range from standard atmosphere pressure to 100 MPa and～27.5 pm/℃ from 20 to 200℃, respectively.
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