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Abstract: We propose and demonstrate the use of spatial multiplexing as a means to reduce the costs of distributed sensing networks. We propose a new scheme in which remote power-by-light switching is deployed to scan multiple branches of a distributed sensing network based on Brillouin Optical Time Domain Analysis (BOTDA) sensors. A proof-of-concept system is assembled with two 5-km sensor fiber branches that are alternatively monitored using a fast remotely controlled and optically powered optical switch. The multiplexed distributed sensor fibers were located 10 km away from the interrogation unit and a Raman pump is used to remotely power the switch. Furthermore, the deployed BOTDA unit uses an alternative configuration that can lead to simplified setups.
Fuente: Sensors, 2013, 13(12), 17434-17444
Fecha de publicación: 17/12/2013
Nº de páginas: 11
Tipo de publicación: Artículo de Revista
Proyecto español: TEC2010-20224-C01
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BRAVO ACHA, MIKEL
ANGEL ULLAN NIETO
ZORNOZA INDART, ANDER
ALAYN LOAYSSA LARA
LÓPEZ AMO, MANUEL
JOSE MIGUEL LOPEZ HIGUERA