Mompó Roselló, Juan JoséUrricelqui Polvorinos, JavierLoayssa Lara, Alayn2016-11-102016-11-102016Juan José Mompó ; Javier Urricelqui and Alayn Loayssa "Brillouin optical time-domain analysis sensor with amplification of pump pulses and tolerant to non-local effects", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991634 (May 30, 2016)0277-786X (Print)1996-756X (Electronic)10.1117/12.2236924https://academica-e.unavarra.es/handle/2454/22654We demonstrate a simple technique to provide conventional Brillouin optical time-domain analysis sensor with compensation for pump pulse attenuation and tolerance to non-local effects. The technique is based on operating the sensor in loss configuration so that energy is transferred from the probe wave to the pump pulse that becomes amplified as it counter-propagates with the probe wave. Furthermore, the optical frequency of the probe wave is modulated along the fiber so that the pump pulse experiences a flat gain spectrum that equally amplifies all the spectral components of the pulse, hence, preventing distortion. The method is experimentally demonstrated in a 100-km fiber link, obtaining a measurement uncertainty of 1 MHz at the worst-contrast position.application/pdfengCopyright 2016 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 scatteringBrillouin optical time-domain analysisStrain and temperature measurementsBrillouin amplificationinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess