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20 June 2024 High temperature behavior of femtosecond laser photo-inscribed micro-voids
Matilde Sosa Marti, Maxime Cavillon, Thomas Blanchet, Romain Cotillard, Guillaume Laffont, Matthieu Lancry
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Proceedings Volume 13005, Laser + Photonics for Advanced Manufacturing; 130050N (2024) https://doi.org/10.1117/12.3017540
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Fiber Bragg gratings are widely used for optical sensing applications, including their deployment in harsh environments. The use of Type III femtosecond gratings shows a prominent interest due to their ability to withstand very high temperatures (over 1000°C for 100’s of hours). These Type III fiber Bragg gratings correspond to a periodic structure of micro-voids generated by femtosecond-laser in silica-based optical fibers, fabricated by the point-by-point technique. The physicochemical characteristics of the micro-voids were investigated by quantitative phase microscopy technique and their thermal stability monitored through isochronal annealing experiments up to 1250°C.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Matilde Sosa Marti, Maxime Cavillon, Thomas Blanchet, Romain Cotillard, Guillaume Laffont, and Matthieu Lancry "High temperature behavior of femtosecond laser photo-inscribed micro-voids", Proc. SPIE 13005, Laser + Photonics for Advanced Manufacturing, 130050N (20 June 2024); https://doi.org/10.1117/12.3017540
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KEYWORDS
Fiber Bragg gratings
Optical fibers
Thermal stability
Femtosecond lasers
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