Investigation of signal demodulation of Mach-Zehnder interferometric fiber optic sensor with 3x3 coupler

被引：0

作者：

Hou, Wenkui ^{[1
]}

Ding, Xianghui ^{[1
]}

Lin, Jing ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Acoust, Natl Lab Acoust, Beijing, Peoples R China

来源：

2008 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, VOLS 1-12 | 2008年

关键词：

fiber optic sensor; demodulation; coupler;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Fiber optic sensors have been used widely during the past two decades. Demodulation module is very important in the system. The performance of the system may be suffered significantly if the demodulation algorithm is not properly carried out. The demodulation algorithm for a Mach-Zehnder interferometric fiber acoustic sensor with 3x3 coupler is investigated in this paper. The mathematical expression of the demodulation error is given under the condition that the splitting ratio of the three arms is not even. Based on that, a method to rectify the unbalance is proposed, which shows good performance in simulations.

引用

页码：1465 / 1468

页数：4

共 7 条

[1] Large-scale multiplexing of interferometric fiber-optic sensors using TDM and DWDM [J].

Cranch, GA ;

Nash, PJ .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2001, 19 (05) :687-699

[2] Acoustic fiber sensor arrays [J].

Digonnet, MJF ;

Vakoc, BJ ;

Hodgson, CW ;

Kino, GS .

SECOND EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS: PROCEEDINGS, 2004, 5502 :39-50

[3]

HILL D, 2005, P SPIE FIBER OPTIC H, V5780

[4]

KIRKENDALL CK, 2004, J PHYS D, V37, P198

[5] A distributed-feedback fibre laser based optical fibre hydrophone system with very high-sensitivity [J].

Leung, I ;

Brodzeli, Z ;

Whitbread, T ;

Chen, XB ;

Peng, GD .

ADVANCED SENSOR SYSTEMS AND APPLICATIONS II PT 1AND 2, 2004, 5634 :434-443

[6]

NASH PJ, 2000, P SPIE LARGE SCALE M, V4402, P55

[7]

Udd E., 1991, FIBER OPTIC SENSORS

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