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

Bravo Acha, Mikel; Ullán Nieto, Ángel; Zornoza Indart, Ander; Loayssa Lara, Alayn; López Amo, Manuel; López Higuera, José Miguel

doi:10.3390/s131217434

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Identificadores

URI: http://hdl.handle.net/10902/4113

DOI: 10.3390/s131217434

ISSN: 1424-8220

Fecha

2013-12

Derechos

Publicado en

Sensors, 2013, 13(12), 17434-17444

Editorial

MDPI

Palabras clave

BOTDA sensor

Remote sensing

Optical switch

Sensor networks

Resumen/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.

Excepto si se señala otra cosa, la licencia del ítem se describe como © 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.