MCVD METHOD OF MANUFACTURING LIGHT-GUIDE FIBERS WITH CORE MADE FROM QUARTZ GLASS LIGATED WITH NITROGEN Russian patent published in 2018 - IPC C03B37/75 C03C13/00 C03B37/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a modified method of chemical vapor deposition for manufacturing of radiation-resistant optical fibers with a fluorosilicate shell and a core of quartz glass ligated with nitrogen. Initial vapor-gas mixture containing N₂, O₂ and a pair of SiCl₄, is introduced directly into the tube at ratio of oxygen volumes to gaseous silicon tetrachloride in the range 0.05–0.1, and as a carrier gas for supply of SiCl₄ gases nitrogen is used. Introduction of nitrogen into the core leads to increase in the refractive index by 0.0015.

EFFECT: simplified manufacturing process.

1 cl, 3 ex