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:
Nov. 08, 2011
Filed:
Apr. 03, 2009
Pierre Sillard, Le Chesnay, FR;
Elise Regnier, Bievres, FR;
Marianne Bigot-astruc, Marcoussis, FR;
Denis Molin, Draveil, FR;
Louis-anne DE Montmorillon, Versailles, FR;
Simon Richard, Villebon sur Yvette, FR;
Pierre Sillard, Le Chesnay, FR;
Elise Regnier, Bievres, FR;
Marianne Bigot-Astruc, Marcoussis, FR;
Denis Molin, Draveil, FR;
Louis-Anne de Montmorillon, Versailles, FR;
Simon Richard, Villebon sur Yvette, FR;
Draka Comteq, B.V., Amsterdam, NL;
Abstract
A dispersion-shifted optical fiber (NZDSF) includes a central core (r, Dn), an inner cladding having at least three zones with a first intermediate cladding zone (r, Dn), a second ring zone (r, Dn) and a third buried trench zone (W, Dn). The buried trench zone has an index difference (Dn) with the optical cladding between −5·10and −15·10and has a width (W) between 2.5 μm and 5.5 μm. The present optical fiber, at a wavelength of 1550 nm, has reduced Rayleigh scattering losses of less than 0.164 dB/km, with limited bending losses.