Application of remote power-by-light switching in a simplified BOTDA sensor network

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URI: http://hdl.handle.net/10902/4113
ISSN: 1424-8220
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Author
Bravo Acha, Mikel; Ullán Nieto, ÁngelAutoridad Unican; Zornoza Indart, Ander; Loayssa Lara, Alayn; López Amo, Manuel; López Higuera, José MiguelAutoridad Unican
Date
2013-12
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© 2013 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
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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© 2013 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.Except where otherwise noted, this item's license is described as © 2013 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.