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:
May. 21, 2019
Filed:
Dec. 20, 2013
Applicant:
Draka Comteq B.v., Amsterdam, NL;
Inventors:
Louis-Anne de Montmorillon, Versailles, FR;
Pierre Sillard, Le Chesnay, FR;
Assignee:
Draka Comteq B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); G02B 6/028 (2006.01); G02B 6/036 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0281 (2013.01); G02B 6/0365 (2013.01); G02B 6/03633 (2013.01);
Abstract
The invention concerns a single mode optical fiber having a core and a cladding, the core refractive index profile having a trapezoid-like shape. According to an aspect of the invention, the transition part of the trapezoid-like core refractive index profile is obtained by gradually changing a concentration of at least two dopants from a concentration in said center part of said core to a concentration in a cladding part adjacent to said core.