Method for machining a preform blank, preform, and device
OwnerMichael LORENZinventor
Life of this patent
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Abstract
A method for machining a preform blank, to a method for producing a preform, to a preform, and to a device for machining a preform blank. In a method for machining a preform blank for producing a preform of a multi-core fiber, an eccentric hole is produced in the preform blank using a drill. The hole extends along a longitudinal extent of the preform blank. A position of the preform blank and/or of the drill is selected such that a drift of the drill occurring during drilling causes a change in a position of the hole within a cross section of the preform blank, which change is greater in the azimuthal direction than in the radial direction. In this way, the harmful radial drift component can be minimized, and a preform of particularly high quality can be produced.
Claims20
A method for machining a preform blank for producing a preform of a multi-core fiber, in which an eccentric hole is produced in the preform blank using a drill, which hole extends along a longitudinal extent of the preform blank, wherein a position of the preform blank and/or of the drill is selected such that a drift of the drill occurring during drilling causes a change in a position of the hole within a cross section of the preform blank, which change is greater in the azimuthal direction than in the radial direction.
A device for machining a preform blank to produce a preform of a multi-core fiber, comprising a holding device for holding a preform blank, a drill for producing an eccentric hole in the preform blank, and a positioning device which is designed to move the holding device and/or the drill in order to adjust a position of the preform blank and/or of the drill such that a drift of the drill occurring during drilling causes a change in a position of the hole within a cross section of the preform blank, which change is greater in the azimuthal direction than in the radial direction.
Dependencies are inferred from the claim text.