Share Email Print
cover

Proceedings Paper

Analytical expression and experimental validation of the Brillouin gain spectral broadening at any sensing spatial resolution
Author(s): Mehdi Alem; Marcelo A. Soto; Moshe Tur; Luc Thévenaz
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A novel and simple analytical expression to describe the Brillouin gain spectral broadening as a function of the spatial resolution in time-domain Brillouin distributed fiber sensors is deduced. The proposed model is experimentally validated using a pump-probe Brillouin sensing setup and also compared with numerical and approximate results. In addition, a compact mathematical form is presented for the peak gain reduction resulting from incomplete acoustic-wave activation in Brillouin sensors with short spatial resolution. Both mathematical expressions can be used together to quantitatively predict the impact of the spatial resolution on the signal-to-noise ratio and frequency uncertainty of the sensor.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239J (23 April 2017); doi: 10.1117/12.2267639
Show Author Affiliations
Mehdi Alem, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Marcelo A. Soto, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Moshe Tur, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Tel Aviv Univ. (Israel)
Luc Thévenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

© SPIE. Terms of Use
Back to Top