The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2022
Filed:
Mar. 04, 2010
Jens Kristian Lyngsø, København S, DK;
Christian Jakobsen, Virum, DK;
Jesper Skov Gretlund, Tarnby, DK;
Harald R. Simonsen, Lejre, DK;
Jens Kristian Lyngsø, København S, DK;
Christian Jakobsen, Virum, DK;
Jesper Skov Gretlund, Tarnby, DK;
Harald R. Simonsen, Lejre, DK;
NKT PHOTONICS A/S, Birkerod, DK;
Abstract
The invention relates to an optical fiber having an axial direction and a cross section perpendicular to said axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength λ, and comprises a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature comprising a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.