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:
Feb. 16, 2016
Filed:
Jul. 03, 2013
Yangtze Optical Fibre and Cable Joint Stock Limited Company, Wuhan, Hubei, CN;
Su Chen, Hubei, CN;
Chen Yang, Hubei, CN;
Beibei Cao, Hubei, CN;
Weijun Tong, Hubei, CN;
Jie Luo, Hubei, CN;
YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY, Wuhan, Hubei, CN;
Abstract
An optical fiber with a large effective area includes a core layer and a cladding layer. The core layer comprises an inner core layer having a radius of 1-4 μm and a relative refractive index difference Δof −0.2%≧Δ<0% relative to the outer core layer, and an outer core layer having a radius of 4-7 μm and a relative refractive index difference Δof −0.15%-0.05%. Δremains unchanged or increases as the radius of the inner core layer increases. The cladding layer comprises an inner cladding layer cladding the core layer and having a radius of 7-20 μm and a relative refractive index difference Δof −0.5%˜−0.1%, a depressed cladding layer has a radius of 12-40 μm, and a relative refractive index difference Δof −1.0%˜−0.3%, and an outer cladding layer having a relative refractive index difference Δof −0.2%˜−0.4%.