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Proceedings Paper

Effect of pulse chirp on distributed Brillouin fiber sensing
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Paper Abstract

The influence of the frequency chirp inherent to the generation of a pump pulse by a Mach-Zehnder intensity modulator is presented in the context of a distributed Brillouin sensor configuration. This frequency chirp depends on the pulse shape and its impact is related to the relative importance of the rising and falling edges with respect to the total pulse width. This results in a biased evaluation of the Brillouin frequency in regions where an abrupt change of this Brillouin frequency is observed.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044J (16 May 2008); doi: 10.1117/12.786111
Show Author Affiliations
Carlos A. Galindez, Univ. of Cantabria (Spain)
Swiss Federal Institute of Technology (Switzerland)
Luc Thévenaz, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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