Fibre Tip Sensor with Embedded FBG-LPG for Temperature and Refractive Index Determination by means of the Simple Measurement of the FBG Characteristics

被引：8

作者：

Berrettoni, C. ^{[1
,2
]}

Trono, C. ^{[1
]}

Vignoli, V. ^{[2
]}

Baldini, F. ^{[1
]}

机构：

[1] CNR, IFAC, Nello Carrara Inst Appl Phys, I-50019 Sesto Fiorentino, Italy

[2] Univ Siena, Informat Engn & Math Dept, I-53100 Siena, Italy

来源：

JOURNAL OF SENSORS | 2015年 / 2015卷

关键词：

GRATING SENSORS; DISCRIMINATION; STRAIN; SINGLE;

D O I：

10.1155/2015/491391

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel optical fibre sensing system based on a hybrid long period grating (LPG) and Bragg grating (FBG) configuration is proposed and demonstrated experimentally. The hybrid configuration, which uses the difference in temperature and refractive index (RI) different response of a Bragg grating and a long period grating, makes it possible to discriminate simultaneously the temperature and the refractive index of different aqueous solutions. RI (1.33 RIU-1.40 RIU) and temperature (21 degrees C-28 degrees C) working ranges have been experimentally determined. Experimental results show that the maximum accuracy in the refractive index measurement (0.004 RIU) with temperature compensation has been achieved within the working ranges.

引用

页数：8

共 13 条

[1] Optical fibre gratings as tools for chemical and biochemical sensing [J].

Baldini, F. ;

Brenci, M. ;

Chiavaioli, F. ;

Giannetti, A. ;

Trono, C. .

ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2012, 402 (01) :109-116

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

Bhatia, V .

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

[3] Hybrid FBG-LPG sensor for surrounding refractive index and temperature simultaneous discrimination [J].

Chamorro Enriquez, Daniel Alfredo ;

da Cruz, Alberto R. ;

Rocco Giraldi, Thereza M. .

OPTICS AND LASER TECHNOLOGY, 2012, 44 (04) :981-986

[4] Temperature and strain discrimination using a single tilted fibre Bragg grating [J].

Chehura, Edmon ;

James, Stephen W. ;

Tatam, Ralph P. .

OPTICS COMMUNICATIONS, 2007, 275 (02) :344-347

[5] Simultaneous measurement of temperature and external refractive index by use of a hybrid grating in D fiber with enhanced sensitivity by HF etching [J].

Chen, XF ;

Zhou, KM ;

Zhang, L ;

Bennion, I .

APPLIED OPTICS, 2005, 44 (02) :178-182

[6] 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

[7] Fiber Bragg grating technology fundamentals and overview [J].

Hill, KO ;

Meltz, G .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) :1263-1276

[8] 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

[9] Tapered fiber Mach-Zehnder interferometer for simultaneous measurement of refractive index and temperature [J].

Lu, Ping ;

Men, Liqiu ;

Sooley, Kevin ;

Chen, Qiying .

APPLIED PHYSICS LETTERS, 2009, 94 (13)

[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

← 1 2 →