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• Patents > 2007-07-05 > SECTION C CHEMISTRY; METALLURGY > GLASS; MINERAL OR SLAG WOOL > MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES

Vapor axial deposition apparatus and method for fabricating soot preform using the same

Abstract

Vapor Axial Deposition (VAD) apparatus and method is provided. The VAD apparatus includes a first torch, a second torch, a thermometer, a controller, and a moving device. The first torch grows a core by depositing a soot at an end of a soot preform arranged on an axis. The second torch grows a clad by depositing a soot on the face of the core. The thermometer detects the temperature of the end of the soot preform along the axis and the temperature of an other/lower portion of the core. The controller calculates a difference between a temperature (T1) of the end of the soot preform and a temperature (T4) of a lower portion of the core and controls the movement of the soot preform according to the difference. The moving device moves the soot preform along the axis according to the instruction of the controller.

Filed on: 2006-07-20; Application Number: 11489959