Fiber-optic extrinsic Fabry-Perot interferometer vibration sensor with two-wavelength passive quadrature readout

Author

Fürstenau, Norbert ; Schmidt, Markus

Author_Institution

Inst. of Flight Guidance, German Aerosp. Res. Establ., Braunschweig, Germany

Volume

1

fYear

1997

Firstpage

607

Abstract

A new fiber-optic extrinsic Fabry-Perot microinterferometer cantilever beam type vibration sensor (EFPI-V) is described. For eliminating signal fading effects a two-wavelength demodulation scheme is implemented. The theoretical model of this sensor with pronounced eigenfrequency spectrum in the acoustic range is confirmed by experimental results. Initial field tests in an experimental airport ground traffic surveillance system for vehicle defection via monitoring of structural vibrations demonstrate the application as traffic sensor

Keywords

Fabry-Perot interferometers; air traffic control; airports; demodulation; eigenvalues and eigenfunctions; fibre optic sensors; surveillance; vibration measurement; acoustic range; airport; cantilever beam type; eigenfrequency spectrum; extrinsic Fabry-Perot interferometer; fiber-optic sensor; ground traffic surveillance system; microinterferometer; signal fading effects; structural vibrations; traffic sensor; two-wavelength demodulation scheme; two-wavelength passive quadrature readout; vehicle detection; vibration sensor; Acoustic sensors; Acoustic testing; Demodulation; Fabry-Perot interferometers; Fading; Optical fiber sensors; Optical fiber testing; Sensor phenomena and characterization; Structural beams; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE

Conference_Location

Ottawa, Ont.

ISSN

1091-5281

Print_ISBN

0-7803-3747-6

Type

conf

DOI

10.1109/IMTC.1997.604022

Filename

604022