Miniaturized Optical Fiber Sensor Interrogation System Employing Echelle Diffractive Gratings Demultiplexer for Potential Aerospace Applications

Author

Xiao, Gaozhi ; Mrad, Nezih ; Wu, Fang ; Zhang, Zhiyi ; Sun, Fengguo

Author_Institution

Inst. for Microstruct. Sci., Nat. Res. Council, Ottawa, ON

Volume

8

Issue

7

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

1202

Lastpage

1207

Abstract

To enable the application of optical fiber sensors to aerospace vehicles, the sensor interrogation or data acquisition system has to meet small size and low weight requirements. This paper presents the developmental work of an echelle diffractive gratings (EDGs) demultiplexer-based optical fiber sensor interrogation system. The operation principle of this system and its application to fiber Bragg grating (FBG) sensor interrogation are presented. The experimental results have shown that the developed interrogator (not including the electronic controller) weighs less than 60 g and provides better than 1 pm measurement resolution and better than plusmn10 pm measurement accuracy.

Keywords

Bragg gratings; aircraft instrumentation; data acquisition; fibre optic sensors; FBG; aerospace applications; aerospace vehicles; data acquisition system; echelle diffractive gratings demultiplexer; fiber Bragg grating; miniaturized optical fiber sensor interrogation system; Bragg gratings; Data acquisition; Diffraction gratings; Fiber gratings; Optical diffraction; Optical fiber sensors; Optical sensors; Sensor systems and applications; Vehicles; Weight control; Echelle diffractive gratings; fiber Bragg gratings; interrogators; miniaturization; optical fiber sensors;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2008.926521

Filename

4567506