Optical fiber, in particular a laser fiber containing a doped glass fiber core and cladding around the fiberglass core

摘要: The invention relates to an optical fiber, in particular a laser containing doped glass fiber core (1) and cladding (2) around the latter with refraction index profile which decreases outwards from core. is distinguished by at least one intermediate layer (3, 4, 5) being disposed between reduce mechanical tension therebetween. In advantageous embodiment, such way as ensure stepped distribution cladding, co-doped refractive counteract index-increasing effect of doping. further application barrier region during preparation preform avoid diffusion special dopants collapse process, allow layer.