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Proceedings Paper

Interferometric displacement sensor by use of a single-passband incoherent microwave photonics filter
Author(s): Carlos R. Fernández-Pousa; Haroldo Maestre; Pablo Corral
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Paper Abstract

A novel interferometer interrogation concept based on Microwave Photonics is proposed and demonstrated. The system is conceptually equivalent to the double-interferometer interrogation technique in low-coherence interferometry and similar to a Microwave Photonics filter based on a fiber-optics dispersive link driven by a sliced broadband source, where the resonance in its frequency response determines the interferometer’s optical path difference. In a proof-ofconcept experiment, we use the interferometer as a displacement sensor, attaining a resolution of 63 μm over a measurement range of 3.7 mm using conventional 20-nm C-band EDFA sources and a radio-frequency bandwidth of 7 GHz.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157AD (2 June 2014); doi: 10.1117/12.2058670
Show Author Affiliations
Carlos R. Fernández-Pousa, Univ. Miguel Hernández (Spain)
Haroldo Maestre, Univ. Miguel Hernández (Spain)
Pablo Corral, Univ. Miguel Hernández (Spain)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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