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Proceedings Paper

Dynamic displacement measurements with a dual-cavity fiber Fabry-Perot interferometer
Author(s): S. Pullteap; H. C. Seat
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Paper Abstract

An extrinsic fiber Fabry-Perot interferometric sensor is reported for use in vibrometric applications. The sensor operates on the principle of a "virtual" dual-cavity generated within the sensing arm due to the introduction of a birefringent element into the optical path of the sensing cavity. The resulting two sets of "phase-shifted" interference signals produced allowed non-ambiguous directional detection as well as improved resolution in displacement measurements. Experimental displacement data obtained using the fiber interferometer were found to be in good agreement with the reference sensor employed. The potential for overcoming polarization-induced signal fading is also qualitatively illustrated.

Paper Details

Date Published: 3 April 2008
PDF: 8 pages
Proc. SPIE 6793, International Workshop and Conference on Photonics and Nanotechnology 2007, 67930A (3 April 2008); doi: 10.1117/12.798958
Show Author Affiliations
S. Pullteap, Lab. d'Optoéletronique pour les Systèmes Embraqués, ENSEEIHT-INPT (France)
H. C. Seat, Lab. d'Optoéletronique pour les Systèmes Embraqués, ENSEEIHT-INPT (France)


Published in SPIE Proceedings Vol. 6793:
International Workshop and Conference on Photonics and Nanotechnology 2007

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