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Proceedings Paper

The effect of the gain dependency of the linewidth of Brillouin amplification on double slope-assisted dynamic sensing techniques
Author(s): Avi Motil; Raanan Hadar; Ido Sovran; Moshe Tur
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Paper Abstract

The effect of the gain dependency of the Brillouin linewidth on double-slope-assisted Brillouin optical domain, dynamic sensing techniques is studied. These double-slope methods are immune to pump-power related peak Brillouin gain variations, however, they are not immune to gain-dependent variations of the shape of the Brillouin gain spectrum. For a 15ns pump pulse, this gain-dependent shape of the normalized Brillouin gain is shown to lead to a 5.5 [%/dB] strain error when the double-slope sum-difference approach is used, compared with a 7 [%/dB] error when the double-slope ratio approach is used. Ways to compensate for these issues are discussed.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96346Q (28 September 2015); doi: 10.1117/12.2194744
Show Author Affiliations
Avi Motil, Tel Aviv Univ. (Israel)
Raanan Hadar, Tel Aviv Univ. (Israel)
Ido Sovran, Tel Aviv Univ. (Israel)
Moshe Tur, Tel Aviv Univ. (Israel)

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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