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

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.


Editor(s):
Jones, Julian D. C.
Published in:
Proceedings of the 20th International Conference on Optical Fibre Sensors, Proc. SPIE 7503, 75037V-4
Presented at:
20th International Conference on Optical Fibre Sensors, Edinburgh, United Kingdom, October 5, 2009
Year:
2009
Publisher:
SPIE
Note:
Postdeadline Paper
Laboratories:




 Record created 2010-01-20, last modified 2018-09-13

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