Method of fiber production
AssigneeNkt Photonics A/S
InventorsChristian Jakobsen, Harald Roager Simonsen, Jens Kristian Lyngsøe, Mattia Michieletto
Life of this patent
Estimating the term…
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.
Claims13
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 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, wherein the hollow core microstructured optical fiber comprises at least a part of the pressure tube length section.
Dependencies are inferred from the claim text.