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. 18, 2017
Filed:
Jun. 26, 2013
Draka Comteq Bv, HJ Amsterdam, NL;
Denis Molin, Draveil, FR;
Marianne Bigot-Astruc, Marcoussis, FR;
Pierre Sillard, Le Chesnay, FR;
Franciscus Johannes Achten, Em Tilburg, NL;
DRAKA COMTEQ BV, Amsterdam, NL;
Abstract
A multimode optical fiber is provides, which includes an optical core and an optical cladding surrounding the optical core. The optical core has a refractive graded-index profile. The optical cladding includes: an inner layer surrounding the optical core, an intermediate layer, called a 'depressed trench', surrounding the inner layer, and an outer layer surrounding the depressed trench and having a constant refractive index. The depressed trench has a width W and a negative refractive index difference Δnwith respect to the outer layer, and is designed so as to satisfy the following inequality:|0.585677−114.681×+13.7287×+18.7343×−4.61112×0.1−0.913789×0.1|+2×0.1<−30wherein: S is the width of the inner cladding, which is included between 0.6 μm and 1.6 μm; Δnis included between −11.10and −4.10; and W×Δn0.1is lower than −25 μm.