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Proceedings Paper

Long-term thermal stability tests at 1000 degree C of silica fiber Bragg grating made with ultrafast laser radiation
Author(s): Dan Grobnic; Christopher W. Smelser; Stephen James Mihailov; Robert Bruce Walker
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Paper Abstract

Using an ultrafast Ti:sapphire IR laser and a phase mask, fiber Bragg gratings (FBGs) with high thermal stability were fabricated in SMF-28 fiber for sensor applications and were subjected to long annealing tests at 1000 °C. FBGs that maintained more then 99.95 % reflectivity after several hundred hours at this temperature are demonstrated. The gratings perform well in cycling experiments up to 1000 °C and hysteresis in the wavelength response was not detected. The capability of this new type of FBG to be used for high temperature sensors is briefly discussed.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623474
Show Author Affiliations
Dan Grobnic, Communications Research Ctr. Canada (Canada)
Christopher W. Smelser, Communications Research Ctr. Canada (Canada)
Stephen James Mihailov, Communications Research Ctr. Canada (Canada)
Robert Bruce Walker, Communications Research Ctr. Canada (Canada)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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