Application of remote power-by-light switching in a simplified BOTDA sensor network
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Bravo Acha, Mikel; Ullán Nieto, Ángel

Date
2013-12Derechos
Atribución 3.0 España
Publicado en
Sensors, 2013, 13(12), 17434-17444
Publisher
MDPI
Palabras clave
BOTDA sensor
Remote sensing
Optical switch
Sensor networks
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.
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