New Optical Materials And Fibers For Mid IR Region

A new type of halide glasses, based on coordination compounds of the chlorides, bromides and heavy metals have been proposed. The formation of the halide glasses and their property will be discussed on the basis of suggested sheme of cluster compound formation. The paper also deals with the fabrication of silver and thallium halide fibers with axial-symmetric index profile by extrusion;the starting billet has the same cross-sectional profile.The resultant step-index and quasi gradient -index profile fibers had optical losses from 0.4 to 1.0 dB/m at 10.6 μm and good mechanical properties. Also we studied the mechanical properties of new waveguides extruded from AgBr-AgI and KRS-13-AgI solid solution crystals and numerically calculated the optical losses induced by silver colloides in AgHal-materials. The UV-resistance of silver halide fibers of different composion have been investigated. This losses depend on composion and state of fiber.