Methods of soot overcladding an optical preform

Details Methods of soot overcladding an optical preform Methods of soot overcladding an optical preform

1988-03-04

1990-07-17

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 311, 65 182, 65901, 219 1055M, C03B 37018, C03B 37012

Patent

active

049419056

ABSTRACT:
An optical preform is prepared first by depositing soot about a glass subate rod (22) to form a boule. Then the soot boule is sintered to consolidate the material and provide a preform from which optical fiber is drawn. The boule is relatively large so that the resulting preform is capable of providing more optical fiber than those used in the past. In order to be able to sinter successfully the enlarged boule, microwave energy from a furnace (60) is coupled to the glass rod so that the sintering proceeds from the rod radially outwardly thereby allowing gases readily to escape and rendering the process highly efficient.

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