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Thermal stabilization of Type I fiber Bragg gratings for operation up to 600 degrees C
Mattias L Aslund1, John Canning, Michael Stevenson
1Interdisciplinary Photonics Laboratories (iPL), School of Chemistry of University of Sydney,Madsen Building F09, NSW, Sydney 2006 Australia. m.aslund@usyd.edu.au
Optics Letters
|February 18, 2010
Abstract:
The thermal stability of Type I gratings is increased by postthermal tuning of the grating. Optimization of the procedure leads to gratings that can withstand temperatures as high as 600 degrees C. Aging tests lead to lifetime predictions as high as 25 years with <3 dB reduction at 400 degrees C. Single exponential relaxation is observed. Above 800 degrees C regeneration is obtained.

