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:
Oct. 29, 2019
Filed:
Jan. 19, 2017
State Grid Jiangxi Electric Power Company Information & Telecommunication Branch, Nanchang, CN;
State Grid Corporation of China, Beijing, CN;
Jiangsu University, Zhenjiang, CN;
Hua Wang, Nanchang, CN;
Mingyang Chen, Nanchang, CN;
Ping Yin, Nanchang, CN;
Luming Li, Nanchang, CN;
Jin Wei, Nanchang, CN;
Jihai Yang, Nanchang, CN;
Zhimin Cai, Nanchang, CN;
Yuanfeng Zhu, Nanchang, CN;
Hui Tian, Nanchang, CN;
STATE GRID JIANGXI ELECTRIC POWER COMPANY INFORMATION & TELECOMMUNICATION BRANCH, Nanchang, CN;
STATE GRID CORPORATION OF CHINA, Beijing, CN;
JIANGSU UNIVERSITY, Zhenjiang, CN;
Abstract
The refractive index of a fiber core of a few mode optical fiber is n1. A cladding layer surrounding the fiber core includes: a downward-concave cladding layer surrounding the fiber core, the refractive index thereof is n2; a first upward-convex cladding layer surrounding the downward-concave cladding layer, the refractive index thereof is n3; a second upward-convex cladding layer surrounding the first upward-convex cladding layer, the refractive index thereof is n4; an outer layer surrounding the second upward-convex cladding layer, the refractive index thereof is n5. The refractive indexes of the fiber core, the downward-concave cladding layer, the first upward-convex cladding layer, the second upward-convex cladding layer, the outer layer satisfy: n>n3>n>n>n. The fiber is a non-single mode in a direct waveguide state, and equivalent single-mode transmission can be achieved when the optical fiber is bent at a specific bending radius.