Modal interferometer based on hollow-core photonic crystal fiber for strain and temperature measurement

被引：84

作者：

Aref, S. H. ^{[1
,2
]}

Amezcua-Correa, R. ^{[3
]}

Carvalho, J. P. ^{[1
,4
]}

Frazao, O. ^{[1
,4
]}

Caldas, P. ^{[1
,4
,5
]}

Santos, J. L. ^{[1
,4
]}

Araujo, F. M. ^{[1
]}

Latifi, H. ^{[2
]}

Farahi, F. ^{[6
]}

Ferreira, L. A. ^{[1
]}

Knight, J. C. ^{[3
]}

机构：

[1] INESC Porto, P-4169007 Oporto, Portugal

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

[3] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

[4] Univ Porto, Fac Ciencias, Dept Fis, P-4169007 Oporto, Portugal

[5] Escola Super Tecnol & Gestao Viana do Castelo, P-4900348 Viana Do Castelo, Portugal

[6] Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 21期

关键词：

MICROSTRUCTURED-OPTICAL-FIBER; BANDGAP FIBERS; SENSOR; INTERFERENCE; SENSITIVITY; COMPACT; MODES; CELLS;

D O I：

10.1364/OE.17.018669

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, sensitivity to strain and temperature of a sensor relying on modal interferometry in hollow-core photonic crystal fibers is studied. The sensing structure is simply a piece of hollow-core fiber connected in both ends to standard single mode fiber. An interference pattern that is associated to the interference of light that propagates in the hollow core fundamental mode with light that propagates in other modes is observed. The phase of this interference pattern changes with the measurand interaction, which is the basis for considering this structure for sensing. The phase recovery is performed using a white light interferometric technique. Resolutions of +/- 1.4 mu epsilon and +/- 0.2 degrees C were achieved for strain and temperature, respectively. It was also found that the fiber structure is not sensitive to curvature. (C) 2009 Optical Society of America

引用

页码：18669 / 18675

页数：7

共 20 条

[1] Control of surface modes in low loss hollow-core photonic bandgap fibers [J].