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Proceedings Paper

Time-domain distributed sensor with 1 cm spatial resolution based on Brillouin dynamic gratings
Author(s): Kwang-Yong Song; Sanghoon Chin; Nikolay Primerov; Luc Thevenaz
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Paper Abstract

We propose and experimentally demonstrate the highest-resolution BOTDA system ever reported using Brillouin dynamic grating in a polarization-maintaining fiber (PMF). Acoustic waves containing the information of local Brillouin frequency are generated by a long pump pulse in one polarization, and read out by a short probe pulse in the orthogonal polarization at a clearly distinct optical frequency from the pump. In the experiment, a distributed strain measurement with 1 cm spatial resolution is performed over a 20 m fiber.

Paper Details

Date Published: 14 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75037V (14 October 2009); doi: 10.1117/12.848548
Show Author Affiliations
Kwang-Yong Song, Chung-Ang Univ. (Korea, Republic of)
Sanghoon Chin, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Nikolay Primerov, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Luc Thevenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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