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Proceedings Paper

Low-cost Brillouin optical time domain analysis (BOTDA) distributed sensor setup
Author(s): Ander Zornoza; Alayn Loayssa
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Paper Abstract

We present a solution for Brillouin optical time domain analysis (BOTDA) long-range distributed sensing that contributes to improve considerably one of the most important problems these sensors have nowadays: the cost of the setup. We achieve this by simplifying the process to obtain a stable frequency shift between pump and Stokes waves. The technique we propose consist in obtaining the Stokes wave from the pump by frequency shifting in two steps: the first one with a so-called passive Brillouin frequency shifter (BFS), and the second one by low-speed modulation. Moreover, we demonstrate preliminary measurements of this system in typical long-range conditions, with 25km of fiber at 1m resolution, highlighting the sensor capacity.

Paper Details

Date Published: 9 September 2010
PDF: 4 pages
Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 765334 (9 September 2010); doi: 10.1117/12.866351
Show Author Affiliations
Ander Zornoza, Univ. Pública de Navarra (Spain)
Alayn Loayssa, Univ. Pública de Navarra (Spain)


Published in SPIE Proceedings Vol. 7653:
Fourth European Workshop on Optical Fibre Sensors
José Luís Santos; Brian Culshaw; José Miguel López-Higuera; William N. MacPherson, Editor(s)

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