Long-term thermal stability tests at 1000 degree C of silica fiber Bragg grating made with ultrafast laser radiation

Dan Grobnic; Christopher W. Smelser; Stephen James Mihailov; Robert Bruce Walker

doi:10.1117/12.623474

23 May 2005 Long-term thermal stability tests at 1000 degree C of silica fiber Bragg grating made with ultrafast laser radiation

Dan Grobnic, Christopher W. Smelser, Stephen James Mihailov, Robert Bruce Walker

Author Affiliations +

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623474
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

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.

Citation Download Citation

Dan Grobnic, Christopher W. Smelser, Stephen James Mihailov, and Robert Bruce Walker "Long-term thermal stability tests at 1000 degree C of silica fiber Bragg grating made with ultrafast laser radiation", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623474

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