A simultaneous pressure and temperature sensor based on a superstructure fiber grating

被引：1

作者：

Lin, CM ^{[1
]}

Liu, WF ^{[1
]}

Fu, MY ^{[1
]}

Sheng, HJ ^{[1
]}

Bor, SS ^{[1
]}

Tien, CL ^{[1
]}

机构：

[1] Feng Chia Univ, Dept Elect Engn, Taichung 407, Taiwan

来源：

FIBER OPTIC SENSOR TECHNOLOGY AND APPLICATIONS III | 2004年 / 5589卷

关键词：

superstructure fiber grating (SFG); polymer;

D O I：

10.1117/12.567643

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

We demonstrated that a high-sensitivity fiber sensor based on a superstructure fiber grating (SFG) can simultaneously measure the pressure and temperature by encapsulating the grating in a polymer-half-filled metal cylinder, in which there are two openings on opposite sides of the wall filled with the polymer to sense the pressure. The mechanism of sensing pressure is to transfer the pressure into the axial extended-strain. According to the optical characteristics of an SFG composed of a fiber Bragg grating (FBG) and long period grating (LPG), the various pressure and temperature will cause the variation of the center-wavelength and reflection simultaneously. Thus, the sensor can be used for the measurement both of the pressure and temperature. The pressure sensitivity of 2.28 x 10(-2)MPa-(1) and the temperature sensitivity both of 0.015nm/degreesC and -0.143dB/degreesC are obtained.

引用

页码：287 / 294

页数：8

共 9 条

[1]

Bhatia V., 1996, OFC'96. Optical Fiber Communication. Vol.2. 1996 Technical Digest Series. Conference Edition (IEEE Cat. No.96CH35901), P265, DOI 10.1109/OFC.1996.908281

[2] Optical fiber long-period grating sensors [J].