A novel time-division multiplexing fiber Bragg grating sensor interrogator for structural health monitoring

被引：110

作者：

Dai, Yongbo ^{[2
]}

Liu, Yanju ^{[3
]}

Leng, Jinsong ^{[1
]}

Deng, Gang ^{[3
]}

Asundi, Anand ^{[4
]}

机构：

[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150080, Peoples R China

[2] Harbin Inst Technol, Dept Automat Test & Control, Harbin 150001, Peoples R China

[3] Harbin Inst Technol, Dept Aerosp Sci & Mech, Harbin 150001, Peoples R China

[4] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore, Singapore

来源：

OPTICS AND LASERS IN ENGINEERING | 2009年 / 47卷 / 10期

关键词：

Fiber Bragg grating sensor; Wavelength-division multiplexing; Time-division multiplexing; Structural health monitoring; SMART COMPOSITE-MATERIALS; FBG SENSORS; CONCRETE STRUCTURES; OPTIC SENSORS; EFPI;

D O I：

10.1016/j.optlaseng.2009.05.012

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel fiber Bragg grating (FBG) sensor system for measurement of strain and temperature is proposed in this paper. The proposed sensor technique is based on time-division multiplexing (TDM). A semiconductor optical amplifier (SOA), connected in a ring cavity, is used to serve as a gain medium and switch. The SOA is driven by a pulse generator, which operates the SOA at different periods of time to select reflected pulses from a particular sensor. The FBG sensors have identical center wavelengths and can be deployed along the same fiber. This technique relieves the spectral bandwidth issue and permits the interrogation of up to 100 FBGs along a fiber, if the reflectivity of the individual sensors is sufficiently low to avoid shadowing effects. This system is particularly suitable for the application in structural health monitoring (SHM) where large numbers of sensors are required in wide measurement ranges. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

引用

页码：1028 / 1033

页数：6

共 13 条

[1]

ASKINS CG, 2001, Patent No. 6233373

[2]

BERKOFF TA, 1995, P SOC PHOTO-OPT INS, V2444, P288, DOI 10.1117/12.207684

[3] Time- and wavelength-division multiplexing of FBG sensors using a semiconductor optical amplifier in ring cavity configuration [J].

Chung, WH ;

Tam, HY ;

Wai, PKA ;

Khandelwal, A .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2005, 17 (12) :2709-2711

[4] Time-division multiplexing of large serial fiber-optic Bragg grating sensor arrays [J].

Cooper, DJF ;

Coroy, T ;

Smith, PWE .

APPLIED OPTICS, 2001, 40 (16) :2643-2654

[5]

ECKE W, 2003, P OFS 16, P548

[6] Structural health monitoring of smart composite materials by using EFPI and FBG sensors [J].

Leng, J ;

Asundi, A .

SENSORS AND ACTUATORS A-PHYSICAL, 2003, 103 (03) :330-340

[7] Structural health monitoring of concrete cylinders using protected fibre optic sensors [J].

Leng, JS ;

Winter, D ;

Barnes, RA ;

Mays, GC ;

Fernando, GF .

SMART MATERIALS AND STRUCTURES, 2006, 15 (02) :302-308

[8] Structural NDE of concrete structures using protected EFPI and FBG sensors [J].

Leng, JS ;

Barnes, RA ;

Hameed, A ;

Winter, D ;

Tetlow, J ;

Mays, GC ;

Fernando, GF .

SENSORS AND ACTUATORS A-PHYSICAL, 2006, 126 (02) :340-347

[9] Real-time cure monitoring of smart composite materials using extrinsic Fabry-Perot interferometer and fiber Bragg grating sensors [J].

Leng, JS ;

Asundi, A .

SMART MATERIALS & STRUCTURES, 2002, 11 (02) :249-255

[10] A high-performance miniaturized time division multiplexed sensor system for remote structural health monitoring [J].

Lloyd, G ;

Everall, L ;

Sugden, K ;

Bennion, I .

OPTICAL SENSING, 2004, 5459 :145-156

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