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. 23, 2020
Filed:
Oct. 21, 2016
Fiberhome Telecommunication Technologies Co., Ltd, Wuhan, CN;
Cheng Du, Wuhan, CN;
Wenyong Luo, Wuhan, CN;
Lei Yan, Wuhan, CN;
Tao Zhang, Wuhan, CN;
Chao Chen, Wuhan, CN;
Yili Ke, Wuhan, CN;
Ming Kong, Wuhan, CN;
Jie Zhang, Wuhan, CN;
Zhijian Liu, Wuhan, CN;
Lifeng Liu, Wuhan, CN;
Abstract
A method for preparing a doped optical fibre preform includes formulating, a rare earth material or a functional metal material and a co-doping agent into a doping solution, mixing a high-purity quartz powder with the doping solution, drying same at a temperature of 100° C.-150° C. for 12-48 hours, crushing and screening the same to obtain a doped quartz powder; depositing the doped quartz powder onto the surface of a target rod to form a doped core layer; replacing the doped quartz powder with the high-purity quartz powder, and depositing the high-purity quartz powder onto the surface of the doped core layer to form a quartz outer cladding; and removing the target rod, and gradually collapsing the entirety formed from the doped core layer and the quartz outer cladding at a high temperature to obtain the doped optical fibre preform.