Method of fiber production
AssigneeNkt Photonics A/S
InventorsChristian Jakobsen, Harald Roager Simonsen, Jens Kristian Lyngsøe, Mattia Michieletto
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Abstract
A method of producing a microstructured optical fiber is disclosed. The method includes providing a preform and drawing the preform. The preform has a center axis, a length and a first end and a second end and has at least one longitudinal hole extending lengthwise. The method includes inserting a first end of a pressure tube into the hole of the preform at the first end of the preform and subjecting the hole of the preform to a controlled pressure via the pressure tube during the drawing.
Claims5
A method of producing a hollow core microstructured optical fiber, the method comprising:
- providing a preform with a center axis, a length, a first end, and a second end, wherein the preform comprises an outer cladding hollow tube and a plurality of hollow tubes;
- inserting a first end of a pressure tube into each of a sub-set of the plurality of hollow tubes of the preform at the first end of the preform;
- and
- drawing the preform to the hollow core microstructured optical fiber, said drawing comprising subjecting the sub-set of the plurality of hollow tubes of the preform to a controlled pressure via the pressure tubes,
- wherein a pressure tube length section comprising the first end of each said respective pressure tube is inserted into each hollow tube of the sub-set of the plurality of hollow tubes of said preform, and
- wherein the plurality of hollow tubes are arranged inside and fused to the outer cladding hollow tubes.
Dependencies are inferred from the claim text.