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:
Oct. 30, 2007
Filed:
Jun. 19, 2006
Jacob Riis Folkenberg, Kokkedal, DK;
Martin Dybendal Nielsen, Kgs. Lyngby, DK;
Niels Asger Mortensen, Kgs. Lyngby, DK;
Jacob Riis Folkenberg, Kokkedal, DK;
Martin Dybendal Nielsen, Kgs. Lyngby, DK;
Niels Asger Mortensen, Kgs. Lyngby, DK;
Crystal Fibre A/S, Birkerod, DK;
Abstract
A photonic crystal fiber includes a core region for propagating light in a longitudinal direction of the fiber, a cladding region surrounding the core region, the cladding region including micro-structural elements extending in the longitudinal direction. The cladding region further includes at least one stress element having a coefficient of thermal expansion αand extending in the longitudinal direction of the photonic crystal fiber, the stress element(s) being located in a cladding background material having a coefficient of thermal expansion αdifferent from α. The location of the at least one stress element relative to the core region and the micro-structural elements and the coefficients of thermal expansion αand αare adapted to provide a stress induced birefringence in the core region of the photonic crystal fiber. An article includes a photonic crystal fiber, a method of manufacturing and the use of a photonic crystal fiber are furthermore provided.