METHOD FOR MAKING OF FIBER LIGHT GUIDES WORKPIECES, DEVICE FOR ITS IMPLEMENTATION AND WORKPIECE FABRICATED THEREOF Russian patent published in 2009 - IPC C03B37/18 

FIELD: chemistry.

SUBSTANCE: invention refers to the method for workpieces making of W-type single- and multimode fiber light guides. The method is implemented by the plasmochemical precipitation of the deeply depressed fluorosilicate shell SiO₂-F with (Δn=-2.5%) and quartz core to the inner surface of optically pure support tube which surface beforehand undergoes chemical, flame and microwave plasma treatment (using "cold", non-equilibrium, evenly ionised reduced pressure microwave plasma). The gas mixtures O₂ and SiCl₄+C₃F₈ (reflecting shell), then SiCl₄+O₂ (core) are supplied successively into the tube. The method is implemented with the help of device having the device for microwave radiation input with rotation of polarisation plane or polariser mounted in front of plasmotron entrance. The source of microwave energy is wide-band transistor amplifier with electrically tunable driving oscillator and electrically controlled afile:///C:\\Temp\\Word_2 mounted between amplifier and oscillator.

EFFECT: efficiency enhancing of the fabrication process of light guides having the necessary refractive index profile.

6 cl, 3 dwg, 1 tbl, 4 ex