Elimination of environmental noise in interferometric wavelength shift demodulation for dynamic fiber Bragg grating sensor array

被引：16

作者：

He, Jun ^{[1
]}

Li, Fang ^{[1
]}

Feng, Lei ^{[1
]}

Xiao, Hao ^{[1
]}

Liu, Yuliang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2009年 / 282卷 / 14期

关键词：

Fiber optics; Fiber optic sensor; Fiber Bragg grating (FBG); Interferometry; Wavelength shift demodulation; Dynamic signal; Environmental noise; STRAIN SENSOR; SCHEME;

D O I：

10.1016/j.optcom.2009.04.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel reference compensation method for eliminating environmental noise in interferometric wavelength shift demodulation for dynamic fiber Bragg grating (FBG) sensors. By employing a shielded wavelength-division-multiplexed reference FBG in the system the environmental noise is mea, sured from the reference channel, and then subtracted from the demodulation result of each sensor channel. An approximate 40 dB reduction of the environmental noise has been experimentally achieved over a frequency range from 20 Hz to 2 kHz. This method is also suitable for the elimination of broadband environmental noise. The corresponding FBG sensor array system proposed in this paper has shown a wave-length resolution of 7 x 10(-4) pm/root Hz. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：2836 / 2840

页数：5

共 18 条

[1] Fiber Bragg grating array sensor system using a bandpass wavelength division multiplexer and interferometric detection [J].

Berkoff, TA ;

Kersey, AD .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1996, 8 (11) :1522-1524

[2] HOMODYNE DEMODULATION SCHEME FOR FIBER OPTIC SENSORS USING PHASE GENERATED CARRIER [J].

DANDRIDGE, A ;

TVETEN, AB ;

GIALLORENZI, TG .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1982, 18 (10) :1647-1653

[3] Four-element fiber Bragg grating acceleration sensor array [J].

Jiang, Yi .

OPTICS AND LASERS IN ENGINEERING, 2008, 46 (09) :695-703

[4] 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

[5] FIBEROPTIC BRAGG GRATING STRAIN SENSOR WITH DRIFT-COMPENSATED HIGH-RESOLUTION INTERFEROMETRIC WAVELENGTH-SHIFT DETECTION [J].

KERSEY, AD ;

BERKOFF, TA ;

MOREY, WW .

OPTICS LETTERS, 1993, 18 (01) :72-74

[6] HIGH-RESOLUTION FIBER-GRATING BASED STRAIN SENSOR WITH INTERFEROMETRIC WAVELENGTH-SHIFT DETECTION [J].

KERSEY, AD ;

BERKOFF, TA ;

MOREY, WW .

ELECTRONICS LETTERS, 1992, 28 (03) :236-238

[7] A fiber-optic Bragg grating seismic sensor [J].

Laudati, A. ;

Mennella, F. ;

Giordano, M. ;

D'Altrui, G. ;

Tassini, C. Calisti ;

Cusano, A. .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2007, 19 (21-24) :1991-1993

[8] Review of the present status of optical fiber sensors [J].

Lee, B .

OPTICAL FIBER TECHNOLOGY, 2003, 9 (02) :57-79

[9] Wavelength shift determinations using a high sensitivity and stability interferometer [J].

Lin, Shyh-Tsong ;

Lu, Hai-Han ;

Chang, Cheng-Chung .

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS, 2007, 9 (12) :1144-1148

[10] Wavelength shift determination using a dual-path heterodyne Mach-Zehnder interferometer [J].

Lin, Shyh-Tsong ;

Cheng, Yan-Ru .

OPTICS COMMUNICATIONS, 2006, 266 (01) :50-54

← 1 2 →