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Proceedings Paper

High spatial resolution and long-distance BOTDA using differential Brillouin gain in a dispersion shifted fiber
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Paper Abstract

In a long-distance Brillouin sensing system, modulation instability (MI) effect could deplete the probe pulse at a high pulse power in a standard single-mode fiber, which decreases the Brillouin gain and signal-to-noise ratio, and thus limits the spatial resolution and sensing length. In this paper, a dispersion shifted fiber with normal dispersion is used to avoid the MI effect; a spatial resolution of 0.5 m is realized using differential Brillouin gain in a 25-km dispersion shifted fiber, to the best of our knowledge, which is the best value in such a length.

Paper Details

Date Published: 14 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750384 (14 October 2009); doi: 10.1117/12.848676
Show Author Affiliations
Yongkang Dong, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)

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

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