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Sensors 2009, 9(10), 8377-8381; https://doi.org/10.3390/s91008377

Arrays of Regenerated Fiber Bragg Gratings in Non-Hydrogen-Loaded Photosensitive Fibers for High-Temperature Sensor Networks

1
Institute of Photonic Technology (IPHT), Albert-Einstein-Str. 9, 07745 Jena, Germany
2
Fibre Bragg Grating Sensors (FBGS) Technologies GmbH, Buchaer Str. 6, 07745 Jena, Germany
3
Fibre Optic Sensors and Sensing Systems (FOS&S), Cipalstraat 14 - B-2440 Geel, Belgium
*
Author to whom correspondence should be addressed.
Received: 27 August 2009 / Revised: 11 September 2009 / Accepted: 16 October 2009 / Published: 22 October 2009
(This article belongs to the Section Chemical Sensors)
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Abstract

We report about the possibility of using regenerated fiber Bragg gratings generated in photosensitive fibers without applying hydrogen loading for high temperature sensor networks. We use a thermally induced regenerative process which leads to a secondary increase in grating reflectivity. This refractive index modification has shown to become more stable after the regeneration up to temperatures of 600 °C. With the use of an interferometric writing technique, it is possible also to generate arrays of regenerated fiber Bragg gratings for sensor networks. View Full-Text
Keywords: Bragg gratings; grating regeneration; temperature sensing Bragg gratings; grating regeneration; temperature sensing
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Lindner, E.; Chojetztki, C.; Brueckner, S.; Becker, M.; Rothhardt, M.; Vlekken, J.; Bartelt, H. Arrays of Regenerated Fiber Bragg Gratings in Non-Hydrogen-Loaded Photosensitive Fibers for High-Temperature Sensor Networks. Sensors 2009, 9, 8377-8381.

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