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Proceedings Paper

A distributed acoustic and temperature sensor using a commercial off-the-shelf DFB laser
Author(s): Y. Muanenda; C. J. Oton; S. Faralli; T. Nannipieri; A. Signorini; F. Di Pasquale
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Paper Abstract

In this paper, we experimentally demonstrate a hybrid distributed acoustic and temperature sensor (DATS) based on Raman and coherent Rayleigh scattering processes in a standard singlemode fiber. A single commercial off-the-shelf DFB laser and a common receiver block are used to implement a highly integrated hybrid sensor system with key industrial applications. Distributed acoustic sensing and Raman temperature measurement are simultaneously performed by exploiting cyclic Simplex pulse coding in a phase-sensitive OTDR and in Raman DTS using direct detection. Suitable control and modulation of the DFB laser ensures inter-pulse incoherence and intra-pulse coherence, enabling accurate long-distance measurement of vibrations and temperature with minimal post-processing.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96342C (28 September 2015); doi: 10.1117/12.2205249
Show Author Affiliations
Y. Muanenda, Scuola Superiore Sant'Anna (Italy)
C. J. Oton, Scuola Superiore Sant'Anna (Italy)
S. Faralli, Scuola Superiore Sant'Anna (Italy)
Infibra Technologies S.r.l. (Italy)
T. Nannipieri, Scuola Superiore Sant'Anna (Italy)
Infibra Technologies S.r.l. (Italy)
A. Signorini, Scuola Superiore Sant'Anna (Italy)
Infibra Technologies S.r.l. (Italy)
F. Di Pasquale, Scuola Superiore Sant'Anna (Italy)
Infibra Technologies S.r.l. (Italy)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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