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Proceedings Paper

High performance fiber optic sensor based on self referenced FBGs and high-speed dual-wavelength pulse coding
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Paper Abstract

We propose and experimentally demonstrate the feasibility of a highly efficient FBG-based quasi-distributed sensing system employing dual-wavelength cyclic pulse coding. Significant improvement in the measurement range, resolution and TDM multiplexing capabilities can be achieved, as well as crosstalk reduction with respect to a single wavelength TDM-based FBG interrogation scheme. The mechanism of noise reduction by quasi-periodic cyclic coding is experimentally demonstrated, pointing out significant improvement in accuracy with respect to dual-wavelength single pulse TDM-based FBG interrogation. The proposed technique can also enhance the sensing range of hybrid fiber optic sensor systems in which continuous monitoring of distributed and discrete points are simultaneously measured over the same sensing fiber.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96553R (1 July 2015); doi: 10.1117/12.2184148
Show Author Affiliations
Farhan Zaidi, Scuola Superiore Sant'Anna (Italy)
Tiziano Nannipieri, Scuola Superiore Sant'Anna (Italy)
Fabrizio Di Pasquale, Scuola Superiore Sant'Anna (Italy)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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