Fabrication of long-period fiber gratings by focused irradiation of infrared femtosecond laser pulses
- 15 May 1999
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 24 (10) , 646-648
- https://doi.org/10.1364/ol.24.000646
Abstract
We have fabricated long-period fiber gratings by use of a novel technique using focused irradiation of infrared femtosecond laser pulses. We investigate the thermal stability of the fabricated fiber gratings. The values of the loss peak wavelength and the transmittance of the fiber gratings after heat treatment below 500 °C are the same as initial values before heat treatment. The fiber gratings that were fabricated by this technique have a high resistance to thermal decay. We propose that this technique will be useful for fabrication of fiber gratings with a superior aging characteristic.Keywords
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