Induced Bragg Gratings in Optical Fibers and Waveguides Using an Ultrafast Infrared Laser and a Phase Mask
Figure 14
(a) Reflection spectrum of an FBG written through the polyimide jacket of the OFS fiber without H2-loading; (b) transmission spectrum of an FBG written through the polyimide jacket of H2-loaded OFS fibre. Overlaid modeled spectrum shown with black dots.
