Publication

Time-domain distributed sensor with 1 cm spatial resolution based on Brillouin dynamic gratings

Luc Thévenaz
2009
Conference Papers

Abstract

We propose and experimentally demonstrate the highest-resolution BOTDA system ever reported using Brillouin dynamic grating in a polarization-maintaining fiber (PMF). Acoustic waves containing the information of local Brillouin frequency are generated by a long pump pulse in one polarization, and read out by a short probe pulse in the orthogonal polarization at a clearly distinct optical frequency from the pump. In the experiment, a distributed strain measurement with 1 cm spatial resolution is performed over a 20 m fiber.

Official source

https://infoscience.epfl.ch/entities/publication/9b77529e-62ae-45b0-a5a4-580560a18732

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Time-domain distributed sensor with 1 cm spatial resolution based on Brillouin dynamic gratings

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