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Proceedings Paper

Long range multiplexed sensors based on identical Bragg gratings with ultra-low reflectivity
Author(s): M. G. Shlyagin; Luis Antonio Arias Castro; Rodolfo Martínez Manuel; S. V. Miridonov
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Paper Abstract

We present very simple and sensitive techniques capable to interrogate ultra-weak Bragg gratings written in a long SMF-28 fiber. The techniques are suitable for distributed detection and localization of alarm conditions in early warning systems. Also, a high multiplexing capability was demonstrated in a multi-point measuring system utilizing an array of identical FBGs. This technique is based on measuring correlation between the probe and reflected signal. A DFB laser operating in a CW regime was used as a light source. We present results of experimental verification of the techniques in different sensor configurations for static strain and vibration measuring. Multipoint sensor using Bragg gratings with reflectivity of 0.01% printed in a 3-km long fiber was demonstrated.

Paper Details

Date Published: 7 April 2010
PDF: 8 pages
Proc. SPIE 7648, Smart Sensor Phenomena, Technology, Networks, and Systems 2010, 764805 (7 April 2010); doi: 10.1117/12.848874
Show Author Affiliations
M. G. Shlyagin, Ctr. de Investigación Científica y de Educación Superior de Ensenada (Mexico)
Luis Antonio Arias Castro, Ctr. de Investigación Científica y de Educación Superior de Ensenada (Mexico)
Rodolfo Martínez Manuel, Ctr. de Investigación Científica y de Educación Superior de Ensenada (Mexico)
Univ. of Johannesburg (South Africa)
S. V. Miridonov, Ctr. de Investigación Científica y de Educación Superior de Ensenada (Mexico)


Published in SPIE Proceedings Vol. 7648:
Smart Sensor Phenomena, Technology, Networks, and Systems 2010
Kara J. Peters; Wolfgang Ecke; Theodore E. Matikas, Editor(s)

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