Method for drawing an optical fiber using rod-in cylinder technique
AssigneeSterlite Technologies Limited
InventorNivedita Prasad
Life of this patent
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Abstract
A method for drawing an optical fibre from an optical fibre preform with a core section, a cladding section, a first gap and a second gap. The optical fibre preform is attached to an optical fibre draw tower through a handle. In addition, the optical fibre preform is connected to a vacuum system to supply and remove gas from the first gap and the second gap. Moreover, the gas is supplied to create a thermal barrier between the core section and the cladding section during heating of the optical fibre preform. Further, the optical fibre preform is heated inside a heating furnace to draw the optical fibre from the optical fibre preform.
Claims20
A method for manufacturing an optical fibre from a glass preform comprising steps of:
- placing a powdery substance compactly inside a fluorine doped tube, wherein the powdery substance is used to form a core section of the glass preform, wherein the fluorine doped tube forms a cladding section of the glass preform,
- sintering the fluorine doped tube filled with the powdery substance, wherein the powdery substance solidifies and adheres smoothly with the fluorine doped tube to form the glass preform;
- and
- drawing the optical fibre from the glass preform, wherein the glass preform is heated at high temperature to draw the optical fibre.
An optical fibre drawn from a glass preform comprising:
- a core section of the glass preform defined as a region around the longitudinal axis;
- wherein the core section extends radially outward from the longitudinal axis of the optical fibre preform
- a cladding section of the glass preform circumferentially surrounds the core section.
Dependencies are inferred from the claim text.