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. 05, 2014
Filed:
Jun. 08, 2012
Marianne Bigot-astruc, Marcoussis, FR;
Pierre Sillard, Le Chesnay, FR;
Marianne Bigot-Astruc, Marcoussis, FR;
Pierre Sillard, Le Chesnay, FR;
Draka Comteq B.V., Amsterdam, NL;
Abstract
A single-mode optical fiber includes a central core surrounded by an outer optical cladding. The optical fiber includes an inner depressed cladding, a ring, and an outer depressed cladding positioned between the central core and the outer optical cladding. The central core typically has a refractive-index difference (Dn) with the outer optical cladding of between about −0.5×10and 0.5×10. The ring typically has an inner radius (r) of between about 21 microns and 35 microns and a refractive-index difference with the outer optical cladding (Dn) of between about −0.5×10and 0.5×10. The outer depressed cladding typically has a volume (V) of between about 15 μmand 30 μm. The ratio of the volume of the central core over the width of the ring (V/w) is typically between about 0.12 micron and 0.2 micron.