Sapphire-derived all-glass optical fibres

If we could eliminate the phenomenon of stimulated Brillouin scattering (SBS), we could create pulsed laser sources for spectroscopic and coherent lidar applications, as well as multi-kW narrow-linewidth fiber laser sources for coherently phased laser arrays. With that in mind, we used a novel fiber fabrication method known as the moltencore method to realize a new class of optical fibers: all-glass optical fibers free from the effects of SBS.