Method for drawing an optical fiber from a porous preform

Details Method for drawing an optical fiber from a porous preform Method for drawing an optical fiber from a porous preform

C - Chemistry, Metallurgy

03

B

C03B 37/027 (2006.01) C03B 37/012 (2006.01)

Patent

CA 2379153

Method for manufacturing optical fiber comprises the steps of laying down core and cladding materials to form a soot blank, the soot blank including a glass modifier, loading the unconsolidated soot blank into a draw tower, providing a hot zone to heat a portion of the blank to a temperature sufficient to sinter the soot into molten glass, and directly drawing the molten glass into either a consolidated, drawn preform rod (cane) or into an optical fiber.

Le procédé de fabrication de fibre optique de l'invention comprend plusieurs opérations. On commence par déposer une couche de matériau de coeur et de gaine de façon à former une avant-forme de suie contenant un agent modificateur du verre. On charge l'avant-forme de suie non consolidée dans une tour de fibrage. On réalise une zone chaude de façon à chauffer une partie de l'avant-forme jusqu'à une température suffisant au frittage de la suie de façon à donner du verre fondu, puis on fibre directement le verre fondu en fibre.

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