Simultaneous temperature and force measurement using Fabry-Perot interferometer and bandgap effect of a fluid-filled photonic crystal fiber

被引：32

作者：

Han, Tingting ^{[1
]}

Liu, Yan-ge ^{[1
]}

Wang, Zhi ^{[1
]}

Wu, Zhifang ^{[1
]}

Wang, Shuangxia ^{[1
]}

Li, Shuo ^{[1
]}

机构：

[1] Naikai Univ, Inst Modern Opt, Minist Educ, Key Lab Opt Informat Sci & Technol, Tianjin 300071, Peoples R China

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 12期

基金：

中国国家自然科学基金;

关键词：

REFRACTIVE-INDEX SENSOR; SIMULTANEOUS STRAIN; GERMANOSILICATE FIBERS; GRATING WRITTEN; BRAGG GRATINGS; OPTICAL-FIBER;

D O I：

10.1364/OE.20.013320

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel fiber sensor capable of simultaneously measuring force and temperature is proposed and investigated. A section of high-index-fluid-filled photonic bandgap fiber (HIFF-PBGF) is inserted in a fiber loop to act as the sensing head. Photonic bandgap effect of the HIFF-PBGF as well as Fabry-Perot interferometer (FPI) introduced by controlling the splicing between the HIFF-PBGF and single mode fiber is used for achieving force and temperature discrimination. Taking advantage of the bandgap being high sensitivity to the temperature, a high temperature sensitivity of more than -1.94 dB/C is achieved, which is the highest based on the intensity measurement, to our best knowledge. Meanwhile, a force sensitivity of 3.25 nm/N (similar to 3.9 pm/degrees e) is obtained, which could be enhanced by controlling the FPI shape. The device also has the strong points of easy fabrication, compact structure and high interference fringe contrast. (C) 2012 Optical Society of America

引用

页码：13320 / 13325

页数：6

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