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. 06, 2017
Filed:
Mar. 30, 2016
Applicant:
Ofs Fitel, Llc, Norcross, GA (US);
Inventor:
Yi Sun, Suwanee, GA (US);
Assignee:
OFS FITEL, LLC, Norcross, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/028 (2006.01); H04J 14/04 (2006.01); G02B 6/26 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0288 (2013.01); H04J 14/04 (2013.01); G02B 6/268 (2013.01);
Abstract
A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 LP modes for transmission of a spatially-multiplexed optical signal and has optimized maximum differential group delay (MDGD) through a wide range of wavelengths.