METHOD OF PRODUCTION OF OPTICAL FIBER BILLET AND DESIGN OF TORCH TO REALIZE THE METHOD Russian patent published in 2005 - IPC

FIELD: optical fibers production techniques.

SUBSTANCE: the invention is dealt with optical fibers production techniques. For production of optical fiber billets particles of a glass first are synthesized in the oxygen-hydrogenous torch flame. Production a porous billet is made by settling the particles in a radial direction on the external surface of the parent element with following sintering of the porous billet. At that definite ratio between the speed of flow of a starting gaseous material or a gas mixture consisting of the starting gaseous material and an additive gas and a speed of flow of a noble gas should be maintained. The torch has four channels for feeding of gases. The sizes of channels of the torch ensure the definite ratio of the indicated speeds.

EFFECT: The invention ensures an increase of quality of the optical fiber billets.

4 cl, 2 dwg