Application of Remote Power-by-Light Switching in a Simplified BOTDA Sensor Network

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 An...

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Bibliographic Details
Published in:Sensors
Main Authors: Mikel Bravo, Angel Ullan, Ander Zornoza, Alayn Loayssa, Manuel Lopez-Amo, Jose Miguel Lopez-Higuera
Format: Article
Language:English
Published: MDPI AG 2013-12-01
Subjects:
BOTDA sensor
remote sensing
optical switch
sensor network
Online Access:http://www.mdpi.com/1424-8220/13/12/17434
Description
Summary: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.
ISSN:1424-8220

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