Thermal properties of fiber Bragg gratings inscribed point-by-point by an infrared femtosecond laser
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چکیده
Direct, point-by-point inscription of fiber Bragg gratings by infrared femtosecond laser had been recently reported. Response of these gratings to annealing at temperatures in range 500C to 1050C is studied for the first time. Gratings inscribed by infrared femtosecond lasers were thermally stable at temperatures up to 900C, representing a significant improvement in comparison with the “common”, UV-inscribed, gratings. Annealing at temperatures up to 700C increased grating reflectivity.
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تاریخ انتشار 2010