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Proceedings Paper

Regenerated draw tower grating (DTG) temperature sensors
Author(s): Eric Lindner; John Canning; Christoph Chojetzki; Sven Brückner; Martin Becker; Manfred Rothhardt; Hartmut Bartelt
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Paper Abstract

The idea of Bragg gratings, generated during the drawing process of a fiber dated back almost 20 years ago. The technical improvement of the DTG process results today in high reliable and cost effective Bragg gratings for versatile application in the optical fiber sensor market. Due to the single pulse exposure of the fiber, the gratings behave typically like type I gratings with respect to their temperature stability. This means that such gratings only work up to temperatures lower than 300 °C. To increase temperature stability we combined DTG arrays with hydrogen loading and a thermal regeneration process which enables their use in high temperature environment. The regenerated draw tower gratings are suitable for temperatures up to 900°C.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77536M (18 May 2011); doi: 10.1117/12.884645
Show Author Affiliations
Eric Lindner, IPHT Jena (Germany)
FBGS Technologies GmbH (Germany)
John Canning, The Univ. of Sydney (Australia)
Christoph Chojetzki, FBGS Technologies GmbH (Germany)
Sven Brückner, IPHT Jena (Germany)
Martin Becker, IPHT Jena (Germany)
Manfred Rothhardt, IPHT Jena (Germany)
Hartmut Bartelt, IPHT Jena (Germany)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors

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