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Proceedings Paper

Microwave photonics filtering technique for interrogating long weak fiber Bragg grating sensors
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Paper Abstract

A system to interrogate photonic sensors based on long weak fiber Bragg gratings (FBGs) is presented and experimentally demonstrated, dedicated to measure the precise location of several spot events. The principle of operation is based on a technique used to analyze microwave photonics (MWP) filters. The long weak FBGs are used as quasi-distributed sensors. Several events can be detected along the FBG device with a spatial accuracy under 1 mm using a modulator and a photo-detector (PD) with a modest bandwidth of less than 500 MHz. The simple proposed scheme is intrinsically robust against environmental changes and easy to reconfigure.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157AO (2 June 2014); doi: 10.1117/12.2059545
Show Author Affiliations
Amelia Lavinia Ricchiuti, Univ. Politècnica de València (Spain)
David Barrera, Univ. Politècnica de València (Spain)
Salvador Sales, Univ. Politècnica de València (Spain)
Luc Thévenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
José Capmany, Univ. Politècnica de València (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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