@conference{10902/2426, year = {2011}, month = {5}, url = {http://hdl.handle.net/10902/2426}, 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.}, organization = {The authors acknowledge the support from the Spanish Government under the projects: TEC2007-67987-C02 and TEC2010-20224-C02.}, publisher = {SPIE Society of Photo-Optical Instrumentation Engineers}, publisher = {Proceedings of SPIE, 2011, vol. 7753, 77532H}, publisher = {21st International Conference on Optical Fiber Sensors, Ottawa, 2011}, title = {30cm of spatial resolution using pre-excitation pulse BOTDA technique}, author = {Galíndez Jamioy, Carlos Augusto and Quintela Incera, Antonio and Quintela Incera, María Ángeles and López Higuera, José Miguel}, }