Polarization control method for ultraviolet writing of advanced Bragg gratings.Jesper Bo Jensen, Nikolai Plougmann, H. Deyerl, Poul Varming, Jã Rg Hã Bner, Martin Verner KristensenOptics letters2002We present a flexible and simple method for UV writing of Bragg gratings with advanced apodization profiles including discrete phase shifts. The method is based on a p phase shift between the… (More)