Thermal decay characteristics of strong fiber Bragg gratings showing high-temperature sustainability

This is the authors' abstract. We don't add key points for this paper.

Strong fiber Bragg gratings (FBGs) with high-temperature sustainability were fabricated by writing the gratings into several specially developed photosensitive fibers. The thermal decay characteristics of these gratings were investigated over a temperature range from room temperature to 950°C. A cation-hopping model is presented to account for the obvious differences between the FBGs in terms of their thermal properties. A related cation-oriented trap distribution model is also used to simulate the decay properties of the gratings during high-temperature annealing and is found to yield a good fit to the experimental data. An accurate operating lifetime of these specially fabricated gratings can be predicted by using the cation-oriented trap distribution simulation.