Fabrication of high efficiency optical fiber silica preforms in chemical engineering consists of vapor phase deposition with controlled feed of silicon and germanium chlorides

NOVELTY – Fabrication of high-efficiency optical fiber silica preforms comprises axial and eccentric vapor phase deposition with separate feed of the silicon and germanium tetrachlorides. The germanium tetrachloride is fed by capillary injection, which controls the temperature and the degree of oxidation through the atmosphere. In an embodiment of the invention, the germanium concentration is profiled, e.g. as concentric rings along the preform or as a multiple concentration core. USE – In Chemical engineering.

Main Application Field

L01 (Glass – includes chemical compositions, batch treatment, furnaces, flat glass forming, hollow-ware forming, postforming and glass/ceramics, but not lens designs, bottling, bottle-washing, closures for containers, glazing designs, glass cutting, chamfering edges, printing on glass, disposing of used glass or the production of pure sodium silicate. Chemical aspects of optical fibres (C03).); V07 (Fibre-optics and Light Control)

INVENTORS:

SUZUKI CARLOS KENICHI
OGATA DANIELA YURI
TORIKAI DELSON
SEKIYA EDSON HARUHICO
SHIMIZU HIROSHI

_

Patent number: BR200103414-A

PATENT STATUS:

GRANTED

FOR ADDITIONAL INFORMATION:

parcerias@inova.unicamp.br

+55 (19) 3521-5207 / 2607