Differential Phase-Shift-Keying Technique-Based Brillouin Echo-Distributed Sensing.
Fiche publication
Date publication
janvier 2012
Auteurs
Membres identifiés du Cancéropôle Est :
Dr MAILLOTTE Hervé
Tous les auteurs :
Lee MW, Stiller B, Hauden J, Maillotte H, Roch C, Thevenaz L, Sylvestre T
Lien Pubmed
Résumé
In this letter, we experimentally demonstrate Brillouin echoes-based distributed optical fiber sensing with centimeter spatial resolution. It is based on a differential phase-shift-keying technique using a single Mach-Zehnder modulator to generate a pump pulse and a pi-phase-shifted pulse with an easy and accurate adjustment of delay. The results are compared to those obtained in standard Brillouin echo-distributed sensing system with two optical modulators and clearly show a resolution of 5 cm in a spliced segment between two fibers by applying a pi-phase-shifted pulse of 500 ps.
Référence
. 2012 Jan 1;24(1):79-81.