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

Author(s): Schmidt, M.

Journal/Book: IMTC/97 IEEE INSTRUMENTATIO. 1997; 345 E 47TH ST, NEW YORK, NY 10017. Order Info: I E E E SERVICE CENTER, 445 HOES LANE, PO BOX 1331, PISCATAWAY, NJ 08855-1331 USA, 1509 pp., 294 chaps., Plates, PRICE NOT AVAILABLE (hardbound) $210.00 SET PRICE $105.00 MEMBER PRICE (softbound) Host site: OTTAWA, CANADA Sponsors: IEEE Instrumentat & Measurement Soc, IEEE Ottawa Sect. I E E E SERVICE CENTER. 607-610.

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 detection via monitoring of structural vibrations demonstrate the application as traffic sensor.

Note: Article Furstenau N, German Aerosp Res Estab, DLR, Inst Flight Guidance, POB 3267, D-38022 Braunschweig, GERMANY

Keyword(s): IEEE INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE - SENSING, PROCESSING, NETWORKING (IMTC/97); OTTAWA, CANADA. MAY 19-21, 1997

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