An improved fiber optic pressure and temperature sensor for downhole application

被引：28

作者：

Aref, S. H. ^{[1
]}

Zibaii, M. I. ^{[1
]}

Latifi, H. ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Laser & Plasma Res Inst, Tehran, Iran

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2009年 / 20卷 / 03期

关键词：

fiber Fabry-Perot sensor; pressure sensor; temperature sensor; temperature compensation; downhole;

D O I：

10.1088/0957-0233/20/3/034009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees C-1 to 7 psi degrees C-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.

引用

页数：6

共 17 条

[1]

[Anonymous], THESIS

[2] Fiber optic Fabry-Perot pressure sensor with low sensitivity to temperature changes for downhole application [J].