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:
Jun. 18, 2019
Filed:
Feb. 08, 2016
Draka Comteq Bv, Amsterdam, NL;
Draka Comteq BV, Amsterdam, NL;
Abstract
Few mode optical fibers for mode division multiplexing. The Few Mode Fiber supporting 25 or 30 LP guided modes and includes a graded index core with a α-profile, a radius R(at 0 refractive index difference) between 21.5 and 27 μm and a maximum refractive index difference Dnbetween 12.5×10and 20×10, and an end of the α-profile at a radius R, with index difference Dn; a trench surrounding the core with radius Rbetween 30 and 42 μm and refractive index difference Dnbetween −15.10and −6.10, an intermediate depressed trench with a radius R, with R<R<Rand a refractive index difference Dn, with Dn<Dn<0, wherein: for |Dn−Dn|>=0.5×10−3, Min(Dn, Dn)≤−1.5×10−3, and for |Dn−Dn|<0.5×10−3, Dnis between −5×10−3 and −3.5×10−3.