Iribas Pardo, HaritzUrricelqui Polvorinos, JavierMariñelarena Ollacarizqueta, JonSagüés García, MikelLoayssa Lara, Alayn2016-11-102016-11-1020161687-725X (Print)1687-7268 (Electronic)10.1155/2016/8243269https://academica-e.unavarra.es/handle/2454/22660We present a simplified configuration for distributed Brillouin optical time-domain analysis sensors that aims to reduce the cost of the sensor by reducing the number of components required for the generation of the two optical waves involved in the sensing process. Te technique is based on obtaining the pump and probe waves by passive optical filtering of the spectral components generated in a single optical source that is driven by a pulsed RF signal. Te optical source is a compact laser with integrated electroabsorption modulator and the optical filters are based on fiber Bragg gratings. Proof-of-concept experiments demonstrate 1m spatial resolution over a 20km sensing fiber with a 0.9MHz precision in the measurement of the Brillouin frequency shiſt, a performance similar to that of much more complex setups. Furthermore, we discuss the factors limiting the sensor performance, which are basically related to residual spectral components in the filtering process.application/pdfeng© 2016 H. Iribas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Brillouin optical time-domain analysisDistributed sensorsPassive optical filteringSingle optical sourcesArtículo / ArtikuluaAcceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess