30cm of spatial resolution using pre-excitation pulse BOTDA technique

C. A. Galindez; A. Quintela; M. A. Quintela; J. M. Lopez-Higuera

doi:10.1117/12.884996

17 May 2011 30cm of spatial resolution using pre-excitation pulse BOTDA technique

C. A. Galindez, A. Quintela, M. A. Quintela, J. M. Lopez-Higuera

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77532H (2011) https://doi.org/10.1117/12.884996
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A pre-excitation pulse technique in Brillouin optical time domain analysis (PP-BOTDA) for enhancement of the spatial resolution is shown. The technique here exposed is based on the pre-excitation of the stimulated Brillouin scattering and the subtraction of the Brillouin scattering due to the intensity dc level present in the optical pulse. A main optical pulse with 3ns of duration followed by a pulse of 40ns and half the intensity of the main one are used for obtaining 30cm of spatial resolution. The spatial range is 3600m on a standard single mode optical fiber.

Citation Download Citation

C. A. Galindez, A. Quintela, M. A. Quintela, and J. M. Lopez-Higuera "30cm of spatial resolution using pre-excitation pulse BOTDA technique", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77532H (17 May 2011); https://doi.org/10.1117/12.884996

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