Raman-assisted Brillouin optical time-domain analysis with sub-meter resolution over 100 km

X. Angulo-Vinuesa, S. Martin-Lopez, P. Corredera, M. Gonzalez-Herraez
2012 Optics Express  
Sub-meter resolution in long-distance Brillouin Optical Time Domain Analysis (BOTDA) cannot be trivially achieved due to several issues including: resolution-uncertainty trade-offs, self-phase modulation, fiber attenuation, depletion, etc. In this paper we show that combining Raman assistance, differential pulse-width pair (DPP) measurements and a novel numerical de-noising procedure, we could obtain sub-meter resolution Brillouin optical time-domain analysis over a range of 100 km. We
more » ... lly demonstrate the detection of a 0.5 meter hot-spot in the position of worst contrast along the fiber.
doi:10.1364/oe.20.012147 pmid:22714201 fatcat:v4oesqssafflfpbcf3nkazbr4m