Regenerated draw tower grating (DTG) temperature sensors

Eric Lindner; John Canning; Christoph Chojetzki; Sven Brückner; Martin Becker; Manfred Rothhardt; Hartmut Bartelt

doi:10.1117/12.884645

17 May 2011 Regenerated draw tower grating (DTG) temperature sensors

Eric Lindner, John Canning, Christoph Chojetzki, Sven Brückner, Martin Becker, Manfred Rothhardt, Hartmut Bartelt

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77536M (2011) https://doi.org/10.1117/12.884645
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

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.

Citation Download Citation

Eric Lindner, John Canning, Christoph Chojetzki, Sven Brückner, Martin Becker, Manfred Rothhardt, and Hartmut Bartelt "Regenerated draw tower grating (DTG) temperature sensors", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77536M (17 May 2011); https://doi.org/10.1117/12.884645

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