Urricelqui Polvorinos, JavierSagüés García, MikelLoayssa Lara, Alayn2016-11-152016-11-152013Javier Urricelqui ; Mikel Sagues and Alayn Loayssa "Phase-shift based BOTDA measurements tolerant to non-local effects", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87943G (May 20, 2013)0277-786X (Print)1996-756X (Electronic)10.1117/12.2026094https://academica-e.unavarra.es/handle/2454/22690We demonstrate a BOTDA sensor based on the use of the Brillouin phase shift that performs measurements tolerant to non local effects. This technique raises opportunities to increase the distance covered by these sensors and the maximum optical power of the probe wave injected to the fiber. As a result, the system has the potential to increase the SNR achieved at the last meters of the fiber. Proof-of-concept experiments demonstrate unaltered measurements of the phase shift spectrum in a 20Km long fiber for large frequency-dependent distortions of the pump pulse.application/pdfengCopyright 2013 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.Stimulated Brillouin scatteringNon local effectsDistributed fiber sensorsBrillouin phase shiftBOTDANonlinear opticsContribución a congreso / Biltzarrerako ekarpenaAcceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess