Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating

被引：21

作者：

Allsop, T ^{[1
]}

Zhang, L ^{[1
]}

Webb, DJ ^{[1
]}

Bennion, I ^{[1
]}

机构：

[1] Aston Univ, Photon Res Grp, Birmingham B4 7ET, W Midlands, England

来源：

OPTICS COMMUNICATIONS | 2002年 / 211卷 / 1-6期

基金：

英国工程与自然科学研究理事会;

关键词：

long-period fibre grating; strain and temperature sensing; second-order diffraction;

D O I：

10.1016/S0030-4018(02)01906-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effects of temperature and strain on the spectra of the first and second-order diffraction attenuation bands of a single long-period grating (LPG) in step-index fibre. The primary and second-order attenuation bands had comparable strength with the second-order bands appearing in the visible and near-infra red parts of the spectrum. Using first and second-order diffraction to the eighth cladding mode a sensitivity matrix was obtained with limiting accuracy given by cross-sensitivity of similar to1.19% of the measurement. The sensing scheme presented as a limiting temperature and strain resolution of +/-0.7 degreesC and similar to+/-25 muepsilon. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：103 / 108

页数：6

共 15 条

[1]

Adams M. J., 1981, INTRO OPTICAL WAVEGU

[2] Detection of organic aromatic compounds in paraffin by a long-period fiber grating optical sensor with optimized sensitivity [J].

Allsop, T ;

Zhang, L ;

Bennion, I .

OPTICS COMMUNICATIONS, 2001, 191 (3-6) :181-190

[3] Applications of long-period gratings to single and multi-parameter sensing [J].

Bhatia, V .

OPTICS EXPRESS, 1999, 4 (11) :457-466

[4] Cladding-mode resonances in short- and long-period fiber grating filters [J].

Erdogan, T .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1997, 14 (08) :1760-1773

[5] Optical fiber long-period gratings for the refractometry of aqueous solutions [J].

Falciai, R ;

Mignani, AG ;

Vannini, A .

OPTICAL AND FIBER OPTIC SENSOR SYSTEMS, 1998, 3555 :447-450

[6] Simultaneous strain and temperature measurement using a single fibre Bragg grating [J].

Guan, BO ;

Tam, HY ;

Ho, SL ;

Chung, WH ;

Dong, XY .

ELECTRONICS LETTERS, 2000, 36 (12) :1018-1019

[7] Simultaneous independent temperature and strain measurement using in-fibre Bragg grating sensors [J].

James, SW ;

Dockney, ML ;

Tatam, RP .

ELECTRONICS LETTERS, 1996, 32 (12) :1133-1134

[8] Fiber grating sensors [J].

Kersey, AD ;

Davis, MA ;

Patrick, HJ ;

LeBlanc, M ;

Koo, KP ;

Askins, CG ;

Putnam, MA ;

Friebele, EJ .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) :1442-1463

[9] Optical-fiber sensor for simultaneous measurement of pressure and temperature: Analysis of cross sensitivity [J].

Ma, JJ ;

Tang, WZ ;

Zhou, W .

APPLIED OPTICS, 1996, 35 (25) :5206-5210

[10] Hybrid fiber Bragg grating/long period fiber grating sensor for strain/temperature discrimination [J].

Patrick, HJ ;

Williams, GM ;

Kersey, AD ;

Pedrazzani, JR ;

Vengsarkar, AM .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1996, 8 (09) :1223-1225

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