Textures of Silver-Halide Infrared Fibres

Fibres consisting of a silver chloride core, a silver bromide cladding and a metallic silver coating were produced by co-extrusion followed by wire drawing and annealing. In most cases the core material was initially single crystalline. Together with the different flow stresses of core and cladding this may lead to inhomogeneous, non-axially symmetric flow. Particularly it may lead to a non-circular shape of the boundary between core and cladding which must be avoided when the fibres are to be used as infrared light conductors.