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:
Apr. 23, 2013
Filed:
Mar. 26, 2012
Louis-anne DE Montmorillon, Versailles, FR;
Simon Richard, Villebon sur Yvette, FR;
Denis Molin, Draveil, FR;
David Boivin, Longjumeau, FR;
Marianne Bigot-astruc, Marcoussis, FR;
Pierre Sillard, Le Chesnay, FR;
Louis-Anne de Montmorillon, Versailles, FR;
Simon Richard, Villebon sur Yvette, FR;
Denis Molin, Draveil, FR;
David Boivin, Longjumeau, 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, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius rand a positive refractive index difference Δnwith the optical cladding. The intermediate cladding has a radius rand a refractive index difference Δnwith the optical cladding, wherein Δnis less than Δn. The depressed trench has a radius rand a negative index difference Δnwith the optical cladding. At a wavelength of 1310 nanometers, the optical fiber has a mode field diameter (MFD) between 8.6 microns and 9.5 microns and, at a wavelength of 1550 nanometers, the optical fiber has bending losses less than about 0.25×10dB/turn for a radius of curvature of 15 millimeters. At a wavelength of 1260 nanometers, attenuation of the LP11 mode to 19.3 dB is achieved over less than 90 meters of fiber.