SINGLE-MODE BI-LAYERED CRYSTALLINE INFRARED LIGHT WAVEGUIDE Russian patent published in 2008 - IPC G02B6/02 

FIELD: physics.

SUBSTANCE: present invention pertains to fibre-optic communications systems, and particularly to single-mode bi-layered crystalline infrared light waveguides for 5-30 mcm spectrum range. The light waveguide comprises a core and a shell. The core, with diameter of 15-45 mcm, is made from solid solutions of silver chloride and silver bromide, doped with univalent thallium iodide, with the following ratio of ingredients, in wt %: silver chloride 19.5-15.0; silver bromide 80.0-82.0; univalent thallium iodide 0.5-3.0. The shell, with diameter of 0.7-1.0 mm, is made from solid solutions of silver chloride and silver bromide, with the following ratio of ingredients, in wt %: silver chloride 19.0-21.0; silver bromide 81.0-79.0.

EFFECT: obtaining a single-mode bi-layered crystalline infrared light waveguide for transmitting electromagnetic radiation in the middle and far infrared band (5-30 mcm).