Regenerated single pulse fiber Bragg gratings for high temperature sensing

Eric Lindner; Christoph Chojetzki; Julia Mörbitz; Sven Brückner; Martin Becker; Manfred Rothhardt; Hartmut Bartelt

doi:10.1117/12.913624

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30 January 2012 Regenerated single pulse fiber Bragg gratings for high temperature sensing

Eric Lindner, Christoph Chojetzki, Julia Mörbitz, Sven Brückner, Martin Becker, Manfred Rothhardt, Hartmut Bartelt

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Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 835117 (2012) https://doi.org/10.1117/12.913624
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

Regeneration of fiber Bragg gratings has been shown to be an effective method for improving the temperature stability well beyond the limit of conventional gratings. Strong gratings, which require a high number of laser pulses, have been used mostly in the past for the additional regeneration process. Specific production methods such as draw tower inscription allow only single laser pulse illumination. Such a process can provide, however, versatile and cost effective Bragg grating arrays for sensor applications. Therefore, a combination of single pulse gratings and a regeneration process is of great practical interest. We have demonstrated that an increase of the temperature stability up to 800°C for arrays of single pulse gratings is possible. Furthermore we observe a stronger regeneration for 800 nm wavelength gratings with considerably higher reflectivity after the thermal process compared to gratings for the 1550nm wavelength range.

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Eric Lindner, Christoph Chojetzki, Julia Mörbitz, Sven Brückner, Martin Becker, Manfred Rothhardt, and Hartmut Bartelt "Regenerated single pulse fiber Bragg gratings for high temperature sensing", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835117 (30 January 2012); https://doi.org/10.1117/12.913624

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