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. 25, 2017
Filed:
Nov. 03, 2015
Yangtze Optical Fibre and Cable Joint Stock Limited Company, Wuhan, Hubei, CN;
Runhan Wang, Hubei, CN;
Dewu Li, Hubei, CN;
Rong Huang, Hubei, CN;
Gang Chen, Hubei, CN;
Gaoqing Lei, Hubei, CN;
Ruichun Wang, Hubei, CN;
Shengya Long, Hubei, CN;
YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY, Wuhan, Hubei, CN;
Abstract
A bend-insensitive multimode optical fiber includes a core layer, and cladding layers surrounding the core layer. The core layer has a parabolic refractive index profile with α being 1.9-2.2, a radius being 23-27 μm, and a maximum relative refractive index difference being between 0.9-1.2%. The inner cladding layer has a width being 1-3 μm and a relative refractive index difference being between −0.05% and 0.1%. The trench cladding layer has a width being 2-5 μm and a relative refractive index difference being between −1% and −0.3%. The core layer is a Ge/F co-doped silica glass layer, where an F doping contribution at a central position of the core layer is less than or equal to 0%, an F doping contribution at an edge portion of the core layer is greater than or equal to −0.45%. The outer cladding layer is a pure silica glass layer.