Fabrication of Fiber Bragg Grating with an Apodised Phase Mask. SULAIMAN WADI HARUN, PRABAKARAN POOPALAN & HARITH AHMAD. Sains Malaysiana  32  Julai/July 2003

Abstract
A fiber Bragg grating (FBG) is fabricated with the aid of an apodised phase mask. The expanded Gaussian beam from a frequency doubled 244 nm CW argon ion laser is used as the UV printing source. A 66% reflectivity FBG was successfully fabricated by this method, however side lobes still appear in the short wavelength side of the spectrum. This condition is attributed to insufficient coverage by non-uniform ultraviolet light over the phase mask.