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. 16, 2006
Filed:
Sep. 30, 2003
Jean-philippe DE Sandro, Sillery, CA;
Stephane Chatigny, St-Redempteur, CA;
Eric Gagnon, Stoneham, CA;
François Chenard, Ste-Foy, CA;
Jean-Philippe De Sandro, Sillery, CA;
Stephane Chatigny, St-Redempteur, CA;
Eric Gagnon, Stoneham, CA;
François Chenard, Ste-Foy, CA;
CorActive High-Tech Inc., Quebec, CA;
Abstract
A large mode field diameter optical fiber is disclosed. It is a single mode optical fiber which has a core and a cladding. The core of this fiber has two regions, an inner core region and an outer core region which has a refractive index lower than that of the inner core region. The inner core region is doped with a rare-earth element, such as ErO, and a co-dopant, such as AlO, and the outer core region is doped with a dopant such as GeO. The types and amounts of the dopants and co-dopants are adjusted to obtain a fiber with a mode field diameter greater than 5.5 μm at a wavelength of 1550 nm.