Method for fabricating an optical fibre preform
AssigneeUniversity of Southampton
InventorsNatalie WHEELER, Peter SHARDLOW, Francesco POLETTI
Life of this patent
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Abstract
A method of making an optical fibre preform comprising providing a hollow outer tube of glass, providing a hollow primary capillary tube of glass with an outer diameter smaller than an inner diameter of the outer tube, positioning the primary capillary tube inside the outer tube such that an outer surface of the primary capillary tube lies against an inner surface of the outer tube along a contact line parallel to the longitudinal axes of the primary capillary tube and the outer tube, and bonding the primary capillary tube into its position inside the outer tube by directing a laser beam onto a surface of the outer tube or the primary capillary at one or more locations aligned with the contact line.
Claims21
1-30. (canceled)
A method of making an optical fibre preform comprising:
- providing a hollow outer tube of glass;
- providing a hollow primary capillary tube of glass with an outer diameter smaller than an inner diameter of the outer tube;
- positioning the primary capillary tube inside the outer tube such that an outer surface of the primary capillary tube lies against an inner surface of the outer tube along a contact line parallel to longitudinal axes of the primary capillary tube and the outer tube;
- and
- bonding the primary capillary tube into its position inside the outer tube by directing a laser beam to be incident onto an outer surface of the outer tube such that a focal point of the laser beam occurs at the contact line.
A method of making an optical fibre preform comprising:
- providing a hollow outer tube of glass;
- providing a hollow primary capillary tube of glass with an outer diameter smaller than an inner diameter of the outer tube;
- positioning the primary capillary tube inside the outer tube such that an outer surface of the primary capillary tube lies against an inner surface of the outer tube along a contact line parallel to longitudinal axes of the primary capillary tube and the outer tube;
- and
- bonding the primary capillary tube into its position inside the outer tube by directing a laser beam to be incident onto an inner surface of the primary capillary tube at one or more locations aligned with the contact line.
A method of making an optical fibre preform comprising:
- providing a hollow outer tube of glass;
- providing a hollow primary capillary tube of glass with an outer diameter smaller than an inner diameter of the outer tube;
- providing a hollow secondary capillary tube of glass with an outer diameter smaller than an inner diameter of the primary capillary tube;
- positioning the primary capillary tube inside the outer tube such that an outer surface of the primary capillary tube lies against an inner surface of the outer tube along a contact line parallel to longitudinal axes of the primary capillary tube and the outer tube;
- positioning the secondary capillary tube inside the primary capillary tube such that an outer surface of the secondary capillary tube lies against an inner surface of the primary capillary tube in radial alignment with the said contact line;
- and
- bonding the primary capillary tube and the secondary capillary tubes into their positions inside the outer tube by directing a laser beam to be incident onto an outer surface of the outer tube or the inner surface of the secondary capillary tube at one or more locations aligned with the contact line.
Dependencies are inferred from the claim text.