Fiber Bragg Gratings in Visible Spectrum Range With Different Writing Times Followed by Regeneration Heating

This work describes the hydrogenation, writing and thermal treatment process of seed fiber Bragg gratings - FBG, written with spectra in the visible range by an Ion argon laser. Those gratings have different writing times. After writing, those FBGs are submitted to thermal treatment to induce regeneration. The processes are followed to compare the spectral parameters.